ISOM 2017
International Specification
for Orienteering Maps

This International Specification for Orienteering Maps (ISOM2017) has been compiled
and edited by the IOF Map Commission (March/2017).

This work is licensed under a Creative Commons Attribution-NoDerivatives 4.0 International Public
License. For additional license information https://creativecommons.org/licenses/by-nd/4.0/
For the full license text https://creativecommons.org/licenses/by-nd/4.0/legalcode.txt
ISBN: 978-91-639-3394-3
INTERNATIONAL ORIENTEERING FEDERATION
Drottninggatan 47 3½ tr, SE-65225 KARLSTAD, SWEDEN
Website: www. orienteering.org
E-mail: iof@orienteering.org

IOF INTERNATIONAL SPECIFICATION FOR
ORIENTEERING MAPS
1 INTRODUCTION
It is the aim of the International Specification for Orienteering Maps (ISOM) to provide a map specification which
can accommodate the many different types of terrain around the world that are suitable for orienteering. These
specifications should be read in conjunction with the rules for International Orienteering Federation (IOF)
orienteering events. For IOF events, deviations from the map specifications are permissible only with the
sanction of the IOF. Other orienteering disciplines (mountain bike orienteering, trail orienteering and ski
orienteering) and formats (sprint) may have separate map specifications, but the ISOM is the basis for the otherspecifications.
The development of orienteering maps reflects the needs of the sport and the technology available to produce
them. In the very early days, at the end of the 19th century, state topographical maps at very small scales (e.g.
1:100 000) were often used. These were gradually produced at larger scales and additional detail was added.
Aerial photographs and colour printing improved the accuracy and legibility of maps. This led to the production of
special purpose orienteering maps in the 1950s. In the early days of international orienteering, the contents andsymbols of orienteering maps varied from place to place. To ensure fair international competitions,standardisation was necessary, and this triggered the creation of the ISOM. The first official version was
published in 1969. In ISOM1972, green was introduced to show runnability, and orienteering maps started tolook very much like they do today. Fortunately, the ISOM has been very well received, and most national
federations have applied the ISOM also for maps used in local events. The ISOM now specifies about one
hundred different symbols.
Digital cartography entered the stage in the 1990s. Up to that time, maps had been drawn with pen and ink or
scribed onto film. These were then copied to printing plates, one for each colour, from which the maps wereprinted. Digital cartography has enabled greater precision in drawing, and easier modification of maps.
Unfortunately, it has also helped mappers to overload maps with too much detail.
Other technological developments have also influenced orienteering mapping. Photogrammetry and, more
recently, airborne laser scanning (or LiDAR - light detection and ranging) has provided better base maps. Global
Navigation Satellite Systems (GNSS) can be used to provide precise locations during fieldwork. Printing
technology is evolving and digital four-colour printing has provided new challenges for orienteering map printing.
New types of paper (including waterproof paper) affect the printing process.
The previous ISOM version was published in 2000. Since then some technological developments have occurred
as well as some changes in the event programme. These developments have been taken into consideration
when revising the ISOM. However, the basic requirements have not changed. Map legibility is still the mostimportant aspect of an orienteering map. In the process of producing a readable map, generalisation is the
keyword. This means that the mapper must always deal with selection, simplification, displacement andexaggeration.
Skilful generalisation is necessary to ensure that maps are readable and suitable for orienteering competitions.
The mapper must always consider that the orienteering map is read whilst running fast through the terrain, andthat the perceptive capabilities of the human eye and brain have their limits.

11.1 Conventions
Several words are used to signify the requirements in this specification.
Must / Shall / Required mean that the definition is an absolute requirement.

Must not / Shall not / May not mean that the definition is an absolute prohibition.

Should / Recommended mean that there may exist valid reasons in particular circumstances to ignore aparticular item, but the full implications must be understood and carefully weighed before choosing a
different course.

Should not / Not recommended mean that there may exist valid reasons in particular circumstances when
the particular behaviour is acceptable or even useful, but the full implications should be understood and thecase carefully weighed before implementing any behaviour/action described with this label.

May / Optional mean that an item is truly optional.

2 GENERAL REQUIREMENTS
2.1 Orienteering and the map
Orienteering is a sport in which the competitor (orienteer) completes a course of legs between control points inthe shortest possible time, by navigating aided only by map and compass. As in all forms of sport, it is necessary
to ensure that the conditions of competition are the same for all competitors.
From the competitors' point of view, a legible and accurate map is necessary for a qualified choice of route, and it
enables them to navigate along the route chosen to suit their navigational skills and physical abilities. However,skill in route choice and map reading loses all meaning if the map is not a good representation of the ground - if it
is of poor legibility, inaccurate or out-of-date. In the ideal case no competitor should gain an advantage or suffer adisadvantage because of faults on the map. For an international event the map must be up-to-date in all parts
which could affect the result of the competition.
The steepness, elevation and shape of the landforms are essential information and are shown using contours.
Identifying anything which impedes progress is crucial to the orienteer: e.g. cliffs, water, dense vegetation. The
path and track network shows where the going and navigation is easiest. A detailed classification of the
impediments to running and the ease of going helps the competitor to make the right decisions.
The aim of the course planner is a course where the deciding factor in the results will be navigational skill. Thiscan be achieved only if the map is clear and legible under competition conditions and sufficiently accurate,complete and reliable. Controls are important building blocks of a course. Choice of sites, placing of the markers,
checking their positions, and locating controls in competition, all put definite demands on the map. The better themap the course planners have, the greater chance they have of setting good, fair courses, whether for the eliteorienteer or for the novice.
For the mapper, the task is knowing which features to map and how to represent them. A continuing involvementin the sport is important for a basic understanding of the requirements for the orienteering map: its content, theneed for accuracy, the level of detail, and above all, the need for legibility.

22.2 Content
An orienteering map is a topographical map. It shall serve navigation through the terrain by representing a
selection of prominent features, and it shall serve route choice by showing variations in runnability (impact on
speed) and visibility. The map shall contain sufficient information for the competing orienteer, while at the sametime being legible at running speed and under varying weather and light conditions. This is accomplished byusing a carefully designed set of symbols and colours and by emphasising generalisation.
Consistent use of colour is important to ease map reading: Blue is used for features that relate to water; Yellow isused for open areas; Green is used for vegetation features; Brown is used for landforms; Black and Grey areused for everything else, including rock and cliffs, paths and roads, and most man-made objects; Purple is used
for course information.
The map shall only contain features which are obvious on the ground to a competitor at speed. It should show
things which could influence map reading or route choice: landforms, rock features, ground surface, hindrance
to progress through the vegetation (runnability), main land usage, hydrography, settlements and individual
buildings, the path and track network, other lines of communication and features useful from the point of view ofnavigation. However, the most important thing is to maintain the clarity and legibility of the map through skilful
generalisation.
The shape of the ground is the most important aspect of an orienteering map. The correct use of contours(including index contours) to show a three dimensional picture of the ground shape and height difference cannot
be overemphasised.
An orienteer's speed and choice of route through the terrain is affected by many factors. Information on all ofthese factors must therefore be included on the map by classifying paths and tracks, by indicating whether
marshes, water features, rock faces and vegetation are passable, by showing the characteristics of the groundsurface and the presence of dense vegetation and open areas.
Clear boundaries between different types of ground surface and different types of vegetation provide valuablereference points for the map reader. It is important that the map shows these.
The map must contain magnetic north lines that shall be parallel to the sides of the map. It may additionallycontain some place names and peripheral text to help the competitor orientate the map to north. Such text shallbe orientated to north. Text within the map shall be placed to avoid obscuring important features and the style oflettering should be simple. Arrowheads may be used to show magnetic north.

2.3 Runnability
The runnability depends on the nature of the terrain (density of trees/scrub and undergrowth, i.e. bracken,
brambles, nettles, as well as marshes, stony ground, etc.). Runnability is divided into five categories of speed.
If speed through flat and open runnable forest is 4 min/km, the following applies:
No Percentage
1 > 100%
2 80-100%
3 60-80%
4 20-60%
5 < 20%Approx. speed
min/kmEasy runningLawns, paved areas, paths<4<5
Normal running speed Rough open land, forest
Slow running
5-6:40Stony ground, undergrowth, dense vegetation
Walk / Difficult to run Very stony ground, undergrowth, dense
6:40-20
vegetation
Extremely stony ground, very dense
Fight
> 20
vegetation
Description

Examples3

A combination of a green screen and stony ground means that the runnability will be worse than for each of themin isolation. The steepness of the terrain may also influence runnability (the steeper the terrain, the lessrunnable).

2.4 Barriers
In orienteering terrain, there may be features that are effectively impassable or uncrossable. Examples arebuildings, fences, walls, high cliffs, water bodies, uncrossable marshes and very dense vegetation. There may
also be features that are out-of-bounds to the competitor, that is, they shall not be crossed or entered. Examples
are environmentally sensitive areas and private land.
Such features are very important for route choice and may also present a danger to the competitor. They must be
clearly identifiable on the map by using very visible symbols as indicated in this specification.
In an ideal world, all features mapped using barrier symbols would be impossible to pass / cross. But nature iscomplex, conditions vary over time, maps have to be generalised, and the competitors do not have equal
physical abilities. This means that a feature that is mapped using a barrier symbol could turn out to be passable /crossable, but to what extent it is possible to pass / cross cannot be determined by inspecting the map.
That a feature is not mapped as impassable does not mean that it will be passable by all orienteers. It should,
however, be passable by the average elite orienteer under normal conditions.

2.5 Map reading
The mapper must always take into consideration the special conditions for orienteering map reading. Firstly,
running makes reading a map more difficult. Secondly, orienteering often takes place in forests, and in all kindsof weather. The light in forests with dense canopies is dimmed even in the middle of the day, and there are
numerous other factors that impact map reading, such as rain, dirt and damages to the map or plastic bag
caused by rough handling. Therefore, it is obvious that legibility is of utmost importance for orienteering maps.
Minimum graphical dimensions must be respected and unnecessary detail must be avoided.

2.6 Generalisation and legibility
Good orienteering terrain contains a large number and a great variety of features. Those which are mostessential for the competitor must be selected and presented on the orienteering map. To achieve this, in such a
way that the map is legible and easy to interpret, generalisation must be employed. There are two phases ofgeneralisation: selective generalisation and graphical generalisation.
Selective generalisation is the decision as to which detail and features should be presented on the map. Two
important considerations contribute to this decision: the importance of the feature from the competitor's point ofview, and its influence on the legibility of the map. These two considerations will sometimes be incompatible, but
the demand for legibility must never be relaxed in order to present an excess of details and features on the map.
Therefore, it will be necessary at the survey stage to adopt minimum sizes for many types of detail. These
minimum sizes may vary somewhat from one map to another according to the amount of detail in question.
However, consistency is one of the most important qualities of the orienteering map.
Graphical generalisation can greatly affect the clarity of the map. Simplification, displacement and exaggeration
are used to this end.
Legibility requires that the size of symbols, line thicknesses and spacing between lines be based on theperception of normal sight in daylight. In devising symbols, all factors except the distance between neighbouring4

symbols have been considered.
The size of the smallest feature which will appear on the map depends partly on the graphical qualities of thesymbol (shape, format and colour) and partly on the position of neighbouring symbols. With immediately
neighbouring features which take up more space on the map than on the ground, it is essential that the correct
relationships between these and other nearby features are also maintained.
For orienteering maps, the shape of the terrain is the most important thing to communicate. Dangerous features,such as high cliffs, must be easy to see on the map. Anything that is out-of-bounds or may bar or impede
progress is essential information: long cliffs, water, dense thickets, private property. The road, path and track
network is important, since it shows where the going and navigation is easiest. Most point features are of lessimportance than line and area features.

2.7 Accuracy
The general rule should be that competitors shall not perceive any inaccuracy in the map. The accuracy of the
map as a whole depends upon the accuracy of measurement (position, height and shape) and the accuracy ofdrawing. A feature must be positioned with sufficient accuracy to ensure that a competitor using compass andpacing will perceive no discrepancy between map and ground.
Absolute height accuracy is of little significance on an orienteering map. On the other hand, it is important thatthe map shows as correctly as possible the relative height difference between neighbouring features.
Accurate representation of shape is of great importance for the orienteer, because a correct, detailed andsometimes exaggerated picture of the landform is an essential precondition for map reading. However, theinclusion of a lot of details must not disguise the overall shapes. This means that form line usage must be limited
to an absolute minimum (e.g. form lines with a shape that can be deduced from the neighbouring contours shallnot appear on the map) and insignificant contour detail must be removed.
Drawing accuracy is of primary importance to any map user because it is closely connected with the reliability of
the final map.
Absolute accuracy is important if an orienteering map is to be used with positioning systems or together withgeographical datasets from other sources. In such cases it must also be possible to transform the map to a wellknown geographical reference system. Readability is always more important than absolute accuracy.
Displacement of map features is encouraged if it makes the map more readable.

2.8 Georeferencing
To georeference a map means to locate it using a geographical reference system. Georeferencing is usefulwhen geographical data from different sources (e.g. orienteering map, digital elevation model, aerial photos,
GNSS positions) need to be combined, and it is useful when tracking competitors during a race. It is therefore
strongly recommended to produce georeferenced orienteering maps. However, before printing the map, it shallfirst be rotated to make the magnetic north lines parallel to the edges of the map page.

2.9 Map scale
The base scale for an orienteering map is 1:15 000.
Generalisation shall follow the requirements for the scale 1:15 000.

5

2.9.1 Map enlargements
The IOF competition rules regulate the use of map enlargements for IOF events. When a map is enlarged, alllines, symbols and screens shall be enlarged proportionally (for the map scale 1:10 000 this means to 150%).
This also applies to the overprint symbols.
For older age groups where reading fine lines and small symbols may cause problems due to deteriorating
vision, enlarged maps are recommended for all formats. Enlargement to the scale 1:10 000 is always
recommended for the youngest age groups where the capacity of reading complex maps is not fully developed.
Large maps are difficult to handle. Maps larger than A3 should be avoided. A map should not be larger than isnecessary for the orienteering competition. Large maps should be cut to fit the course (however, they should not
be smaller than A5). Information about scale, contour interval and north direction shall be available also on cut
maps.

2.10 Contour interval
The ability to easily assess the steepness of the terrain is vital in orienteering. It is therefore very important thatthe contour interval for orienteering maps is standardised.
The contour interval for orienteering maps is 5 metres. In flat terrain where the slope is less than 5% (or thecontours would be more than 7 mm apart) all over the area, 2.5 metre contours may be used. Different contour
intervals shall not be used on the same map.
The presence of a form line between contours makes the terrain appear nearly twice as steep. It is therefore very
important that form lines are used sparingly. Form lines shall only be used to represent important landforms thatcannot be shown using contours. Instead of using form lines, contours should be shifted slightly up or down tobetter represent the important landforms.

2.11 Minimum dimensions
For line and area symbols certain minimum dimensions must be observed. These are based on both printing
technology and the need for legibility. Dimensions in this specification are given at the printed scale of 1:15 000.

2.11.1 On the ground (real world) minimum dimensions
Features that are represented on an orienteering map shall be prominent and easily identifiable by the orienteer
whilst running. Minimum on the ground dimensions are provided for many of the symbols in this specification andthese must be respected. Minimum dimensions do not mean that all features larger than that need to be
represented on the map. For complex terrain, it will often be necessary to operate with larger minimum
dimensions to achieve a legible map.
Prominent features with small terrain footprints are exaggerated on the map (for instance by using a point
symbol) to make them identifiable. When a feature is exaggerated on the map, neighbouring features may need
to be displaced to ensure readability and correct relative positions.

62.11.2 Footprint of symbols
There has to be minimum dimensions for line and area symbols on a map. These are termed graphical minimum
dimensions. The footprint of a symbol is the area the symbol would cover if it was projected onto the terrain.
For a line symbol, the graphical minimum dimension concerns its length on the map. If a line is too short on themap, it ceases to look like a line, and can be mistaken for a point symbol. Also, styled line symbols must not bemade so short that the symbol becomes unrecognisable. If there is room on the map and the line feature is
prominent and significant, it could be mapped even if it is shorter than the footprint of the
0.6
minimum size line. However, it must always be exaggerated in size on the map to meet thegraphical minimum length. A bent line may have to be drawn longer than the minimum 0.6
length in order to make it recognisable.
For an area symbol, the graphical minimum dimension concerns the area covered by the symbol on the map. If
the area is too small, it will be difficult to differentiate it from point symbols, it becomes 'noise' to the map user orthe structure of the symbol will become unrecognisable. If the area is too narrow, it will be difficult to differentiate itfrom line symbols, and a structured area symbol will become unrecognisable. If there is room on the map and thearea feature is prominent and significant it can be mapped even if it is smaller than the footprint of the minimum
size area or narrower than the footprint of the minimum width. However, it must always be exaggerated to meetthe minimum graphical dimensions.

2.11.3 Graphical minimum dimensions
The graphical minimum dimensions apply to the base scale of 1:15 000. This means that for enlarged maps, thegraphical minimum dimensions will be proportionally larger (1.5 times larger for the 1:10 000 map scale). For
instance for a cliff (symbol 202), the minimum length on the map is 0.6 mm. This means that for the map scale
1:10 000, the minimum length on the map for a cliff is 0.9 mm.
Where graphical minimum dimensions are given for individual symbols, these take precedence. For othersymbols the following graphical minimum dimensions apply.
Minimum gaps
To be able to identify the individual symbols, minimum gaps are important. In general, theminimum gap of 0.15 mm applies. The minimum gap between two symbols is the minimum
distance between the outlines of the symbols. Listing all symbol combinations is notpractical, but the following strong recommendations should be combined with common
sense.

min. 0.15

min. 0.15

min. 0.15

For point symbols, the general gap of 0.15 mm applies.
The minimum gap between point symbols and line symbols
including outlines of area symbols shall be 0.15 mm, with exceptions
for gaps between contours and point symbols of other colours.

min. 0.15

The minimum gap between line symbols including outlines of area
symbols of the same colour is 0.15 mm, with some exceptions:min. 0.15



min. 0.15

Joins and crossings of network symbols (earth walls,
watercourses, roads, tracks and paths, power lines, walls andfences).

7Crossings, such as contours and symbols 105-107 (earth walls and erosion gully); symbol 513 (wall) andsymbol 505 (footpath); symbol 511 (major power line) and symbol 516 (fence).

Contours and symbol 104 (earth bank).

For legibility reasons, overlapping between line symbols (including outlines of area
symbols) of different colours should be avoided, and the minimum gap of 0.15 mm should
be applied. There are however exceptions:Contours and cliffs should at least partly overlap

Crossings, such as water courses and contours; fences and water courses.

min. 0.15
OKThe minimum gap of 0.15 mm only applies to the following types of area symbols:


Area symbols with outlines, such as symbols 301 (uncrossable body of water), 302 (shallow body of water),
307 (uncrossable marsh), 501 (paved area), 520 (out-of-bounds area), 522 (canopy) and 523 (ruin).

Exclusive area symbols, such as symbol 206 (gigantic boulder), and 521 (building).

For area symbols in brown, black and blue with structure, such as
broken ground, boulder field, stony ground and marsh symbols, it isimportant that the elements of the symbols do not interfere
significantly with point and line symbols.

min. 0.40

Passages between symbols representing impassable / uncrossable features must be min. 0.40
clearly recognizable, so the minimum gap should be 0.4 mm. Examples are symbols 521(building) and 520 (out-of-bounds area); symbols 521 (building) and 515 (impassable wall);symbols 521 (building) and 521 (building); symbols 201 (impassable cliff) and 201(impassable cliff); symbols 411 (vegetation, impassable) and 301 (impassable body of water).
Openings in line symbols that represent impassable features (fence, cliff, wall) must be clearly recognizable andneed to be at least 0.4 mm wide. For other line features, a minimum opening of 0.25 mm applies.
Minimum line length
Line symbols need to be long enough to differentiate them from other symbols. Closed lines
must have sufficient white space within to allow the line symbol to be recognized. For
closed styled lines such as fences, walls and cliffs, there must be enough room for thestyling (e.g. tags), so that the type of symbol can be recognized.
2 dashes
if isolated

2 dots

0.6
0.6

ø 1.5 mm
5 dotsRendering of dashed lines, dotted lines and styled lines
Dashed lines:
The dash length at the start and end of a dashed line should be the same. The gaps shall always be as given in
the symbol specification. The dashes shall always be as close to the dash length given in the symbol
specification as possible, and never shorter than 0.8 times the given length.
Dotted lines:
The gap between the dots at the start and end of a dotted line should be the same. The gaps shall always be as
close to the gap given in the symbol specification as possible, and never shorter than 0.8 times the given length.
8Styled lines:
The end length at the start and end of the line should be the same. The distance between style symbols on astyled line shall always be as close to the distance given in the symbol specification as possible, and nevershorter than 0.8 times the given length. The end length shall be half the distance between the symbols.
Styled dashed lines:
Dash length shall follow the rules for dashed lines, and the style symbol shall always be centered on the dash.
Minimum dimensions for areas
Providing minimum dimensions for areas is difficult as the shape varies. The minimum width is as important as
the minimum area. Very thin parts of areas must be exaggerated. Minimum widths for area symbols (if not
specified for the symbol):
100% green: 0.25 mm (footprint 3.75 m).
0.25

100% yellow: 0.3 mm (footprint 4.5 m).
Colour screens: 0.4 mm (footprint 6 m).

0.40

2.11.4 Screens
Vegetation, open areas, marshes, etc. are shown with dot or line screens. The following table lists thepermissible combinations of screens.
113 Broken ground
114 Very broken ground
208 Boulder field
209 Dense boulder field
210-212 Stony ground
307 Uncrossable marsh
308, 310 Marshes
401-402 Open lands
403-404 Rough open lands
405 Forest
406, 408, 410, 411 Vegetation
407, 409 Vegetation, good visibility

113 Broken ground
114 Very broken ground
208 Boulder field
209 Dense boulder field
210-212 Stony ground
307 Uncrossable marsh
308, 310 Marshes
401-402 Open lands
403-404 Rough open lands
405 Forest
406, 408, 410, 411 Vegetation
407, 409 Vegetation, good visibility

2.12 Printing and colour
An orienteering map must be printed on good, possibly water resistant, paper (weight 80-120 g/m2).
Spot colour printing is recommended for IOF events. Other printing methods may be used, if colours and symbol
sharpness have the same quality as printing with spot colours.
Legibility depends on the correct choice of colours.
Until 2000, the majority of orienteering maps were printed using spot colour offset printing. With digital maps
many new printing technologies have emerged, like CMYK offset printing (CMYK or 4-colour printing), andprinting using laser or inkjet printers.
9

The new printing techniques have not yet reached the quality of spot colour offset printing. A badly printed map
will spoil the time consuming field surveying and map drawing process, and cause unfair conditions forcompetitors. Consequently, any use of maps printed in another way than the benchmark “spot colour offset
printing” for orienteering events must be tested carefully beforehand, and for international events approved by
the IOF.
For major IOF events, only spot colour offset printing will be allowed until the IOF decides that the quality ofalternative printing methods have reached a sufficient level.

2.12.1 Spot colour printing
Spot colour printing uses pure colour inks. Each spot colour ink is made by mixing a number of stock inks in
specific proportions to produce the desired colour. The colours specified for use for orienteering maps aredefined by the Pantone Matching System (PMS).
The map may be in up to 6 colours (excluding overprinting).
The following spot colours shall be used for orienteering maps:
ColourBlack
Brown
Yellow
Blue
Green
Grey
Violet

PMS number
Process black
471
136
299
361
428
Purple

The appearance of colours is dependent on the printing order.
In spot colour printing, order should always be:
1. yellow
2. green
3. grey
4. brown
5. blue
6. black
7. purple

2.12.2 Four-colour printing
Four-colour printing is the traditional way of printing most colour work; maps have been one of the main
exceptions due to the fine line requirements.
The four-colour printing method uses the three basic colours of the additive colour model: cyan, magenta andyellow. In theory a mix of 100% of cyan, magenta and yellow produces black colour, but in reality it will be more ofa dark brown. Therefore, black is normally printed as a separate colour. After these four colours the model isoften referred to as CMYK.
Although four-colour printing requires fewer and standardized inks, the main advantage of using this process isthat it allows the inclusion of colour photographs and full colour advertisements at no extra cost.
The mapper has to take into consideration the limitations and potential errors of this method. The reproduction ofvery thin lines (contours) requires special attention.
Colours
Colour recommendations for CMYK printing (and other alternative printing methods) is published in a separate
document.

10

Screens
The colour mixture can be done either with traditional printing screens or special printing screens with randomly
distributed dots called stochastic screens or frequency modulated screens. The latter screens will improve
legibility and make fine lines such as contours more readable, and is therefore highly recommended.
Screen frequency
Traditional screens should have a screen frequency of at least 60 lines/cm. For stochastic screens the frequency
will vary randomly.
AnglesTo avoid unwanted moiré effects the recommended angle set should always be used when doing CMYK printing
with regular rasters. In proper stochastic screens the dots are placed randomly, so angles are irrelevant andunwanted moiré effects will not appear.

ColourCyan
Magenta
Yellow
Black

Angle
15°
75°
0°
45°

moiré effect (false angles)

Recommended angles

Printing order
The appearance of colours is dependent on the printing order. In 4-colour offset printing of orienteering maps theprinting order should be:

1. Black
2. Yellow
3. Cyan
4. Magenta

11Overprinting
With traditional spot colour printing inks are physically printed on top of each other. It is possible to simulate thesame with four-colour printing technique, and this optimises legibility and gives a colour appearance as close to
traditional spot colour printing as possible. To achieve this effect in four-colour printing, information underlying (inthe spot colour printing order described in 2.12.1) a specific spot colour should not be blocked out (erased /printed white) completely, but should be blended in to produce a new colour for printing.
Purple
Black
Brown
Blue
Green

Illustration: Contours in dense vegetation printed in 4-colours. Overprinting effect in the right illustration.

2.12.3 Colour vision impairment
Colour vision impairment is the decreased ability to perceive differences between some colours that others candistinguish. That can affect orienteering map reading. 5-8% men and 0.5% women have some kind of colour
related visual disorder. Orienteers with colour impairments may confuse the following colours:magenta and green (control in dark green areas - very hard to see)yellow and green (hard to distinguish between open and thick forested areas)brown and green (problems with brown symbols in green areas)

When choosing colours for the ISOM the above was considered. The chosen set of colours is a compromise.

2.12.4 Printing suggestions for the colour vision impaired
Structure can help in differentiating screens.
Use a rougher dot screen or a hatch pattern for the green screens (406, 408) to differentiate between greens andyellows.
Use a rougher dot screen or a hatch pattern for the green component of the forbidden area (olive green).

2.13 Peripheral information
The following information shall be provided on the front of the map:

Map scale; Contour interval.

Other information that is often included:

12Name of the map; Map issuer; Date of the map (year of surveying); Map specification; Name of mappers;
Name of print shop; Copyright.

3 SYMBOLS
Definitions of features to be mapped and specifications of map symbols are given in the following sections.
Symbols are classified into seven categories:
Landforms(brown)gap or infill between two lines
Note: dimensions are
Rock and boulders(black+grey)line thickness
specified in mm at
Water and marsh(blue)
distance
the scale of 1:15 000.
Vegetation(green+yellow)
diameterAll drawings are at
Man-made features(black)symbol orientated to north
1:7 500 for clarity only.
Technical symbols(black+blue)(OM) = Outside measure(IM) = Inside measure
Course symbols(purple)(CC) = Centre to centre

Most of the symbols in this specification shall be orientated to north. That a symbol is to be orientated to north isindicated with an arrow pointing upward beside the symbol. When a symbol shall be orientated to north, it meansthat it shall be orientated to magnetic north and hence relative to the edges of the paper and the magnetic northlines.
For area symbols, colour percentages are given in the text ("green 50%") and the illustrations ("50%"). For area
symbols with structure / pattern, the calculated colour percentages are given in parenthesis.
Detailed graphical definitions for some of the symbols are provided in section 3.8 Precise definitions of symbols.

3.1 Landforms
The shape of the terrain is shown by means of contours, aided by special symbols for small knolls, depressions,etc. This is complemented in black by symbols for rock and cliffs.
While it is important to show the smaller features of the terrain, such as re-entrants, spurs, knolls anddepressions, it is essential that an abundance of small features do not hide the main features of the terrain, suchas hills, valleys and major fault lines.
Excessive use of form lines must be avoided as this complicates the map and gives a wrong impression of height
differences.
101 Contour
A line joining points of equal height. The standard vertical interval between contours
is 5 metres. A contour interval of 2.5 metres may be used for flat terrains.
Slope lines may be drawn on the lower side of a contour line to clarify the direction of
0.14 slope. When used, they should be placed in re-entrants.
A closed contour represents a knoll or a depression. A depression has to have at least
0.4 (OM)
one slope line. Minimum height/depth should be 1 m.
0.14
Relationships between adjacent contour lines are important. Adjacent contour lines
show form and structure. Small details on contours should be avoided because theytend to hide the main features of the terrain.
Prominent features such as depressions, re-entrants, spurs, earth banks andterraces may have to be exaggerated.
Absolute height accuracy is of little importance, but the relative height difference
between neighbouring features should be represented on the map as accurately as
possible. It is permissible to alter the height of a contour slightly if this improves therepresentation of a feature. This deviation should not exceed 25% of the contour
interval, and attention must be paid to neighbouring features.
The smallest bend in a contour line is 0.25 mm from centre to centre of the line
13

(footprint 4 m). The mouth of a re-entrant or a spur must be wider than 0.5 mm from
centre to centre of the line (footprint 8 m).
The minimum length of a contour knoll is 0.9 mm (footprint 13.5 m) and the minimum
width is 0.6 mm (footprint 9 m) outside measure. Smaller prominent knolls can be
represented using symbol 109 (small knoll) or symbol 110 (small elongated knoll) or
they can be exaggerated on the map to satisfy the minimum dimension.
A depression must accommodate a slope line, so the minimum length is 1.1 mm(footprint 16.5 m) and the minimum width is 0.7 mm (footprint 10.5 m) outside
measure. Smaller, prominent depressions can be represented using symbol 111(small depression) or they can be exaggerated to satisfy the minimum dimension.
Contours should be adapted (not broken) in order not to touch symbol 109 (smallknoll) or 110 (small elongated knoll).
Colour: brown.

0.25 (CC)min.
0.5 (CC)
0.6 (OM)
0.9 (OM)
0.7 (OM)
1.1 (OM)

102 Index contour
Every fifth contour shall be drawn with a thicker line. This is an aid to the quick
assessment of height difference and the overall shape of the terrain surface.
1.5
225
An index contour may be represented as an ordinary contour line in an area withmuch detail. Small contour knolls and depressions are normally not represented
using index contours.
The index contour level must be carefully selected in flat terrain. The ideal level for the
0.4 (OM) index contour is the central contour in the most prominent slopes.
An index contour may have a height value assigned. A height value should only be
inserted in an index contour in places where other detail is not obscured. It shall beorientated so that the top of the label is on the higher side of the contour. The index
0.25 value (label) shall be 1.5 mm high and represented in a sans-serif font.
Colour: brown.

0.14

0.4 (OM)
0.2

min.

103 Form line
Form lines are used where more information must be given about the shape of theground. Form lines are added only where representation would be incomplete withordinary contours. They shall not be used as intermediate contours. Only one formline should be used between neighbouring contours. It is very important that a formline fits logically into the contour system, so the start and end of a form line should beparallel to the neighbouring contours. The gaps between the form line dashes must
be placed on reasonably straight sections of the form line. Form lines can be used todifferentiate flat knolls and depressions from more distinct ones (minimum
height/depth should be 1 m).
Excessive use of form lines must be avoided as this disturbs the three-dimensional
picture of the ground shape and will complicate map reading.
Minimum length (non-closed): two dashes.
Minimum length of a form line knoll or depression: 1.1 mm (footprint 16.5 m) outside
measure.
Colour: brown.

0.1
2.0
0.1

1.1 (OM)
1.1 (OM)

0.5 (CC)
0.4 (OM)
0.14
0.18

14

104 Earth bankAn earth bank is an abrupt change in ground level which can be clearly distinguishedfrom its surroundings, e.g. gravel or sand pits, road and railway cuttings or embankments. Minimum height: 1 m. An earth bank may impact runnability. The tags
represent the full extent of the earth bank.

For long earth banks it is allowed to use tags shorter than the minimum length at theends. If two earth banks are close together, tags may be omitted. Impassable earthbanks shall be represented using symbol 201 (impassable cliff).
Minimum length: 0.6 mm (footprint 9 m).
Colour: brown.

min. 0.6 (OM)

ø 0.45105 Earth wall
Distinct earth wall. Minimum height: 1 m.
Minimum length: 2.0 mm (footprint 30 m).
Colour: brown.

0.18

106 Ruined earth wall
A ruined or less distinct earth wall. Minimum height: 0.5 m.
Minimum length: two dashes (3.65 mm - footprint 55 m). If shorter, the symbol must
be exaggerated to the minimum length or changed to symbol 105 (earth wall).
Colour: brown.

min.

2.0 (CC)
0.35

0.18

0.77 (OM)

2.0 (CC)ø 0.45min.

107 Erosion gully
An erosion gully which is too small to be shown using symbol 104 (earth bank) is
shown by a single line. Minimum depth: 1 m.
Minimum length: 1.6 mm (footprint 24 m).
Contour lines shall not be broken around this symbol.
Colour: brown.

0.75
0.25
min.
1.6 (OM)

0.45 (CC)ø 0.25min.

ø 0.5

109 Small knoll
An obvious mound or knoll which cannot be drawn to scale with a contour. Minimum
height: 1 m.
The symbol shall not touch or overlap contours.
Footprint: 7.5 m x 7.5 m.
Colour: brown.
110 Small elongated knoll
An obvious elongated knoll which cannot be drawn to scale with a contour. Minimum
height: 1 m.
The symbol shall not touch or overlap contours.
Footprint: 12 m x 6 m.
Colour: brown.

0.4
0.8

0.4 (OM)
0.8 (OM)

108 Small erosion gully
A small erosion gully, dry ditch or trench. Minimum depth: 0.5 m.
Minimum length (isolated): three dots (1.15 mm – footprint 17 m).
Contour lines should be broken around this symbol.
Colour: brown.

0.18

111 Small depression
A small depression or hollow without steep sides that is too small to be shown by
contours. Minimum depth: 1 m. Minimum width: 2 m.
Small depressions with steep sides are represented with symbol 112 (pit).
The symbol may not touch or overlap other brown symbols. Location is the centre ofgravity of the symbol, and the symbol is orientated to north.
Footprint: 12 m x 6 m.
Colour: brown.

150.7 (OM)
0.8 (OM)

0.18

max. 0.6 (CC)
(9–13%)
ø 0.2

min.

max. 0.38 (CC)
(22–28%)
ø 0.2

min.

0.9 (OM)

0.9 (OM)

0.9 (OM)

16

0.18

112 Pit
Pits and holes with distinct steep sides which cannot be shown to scale using symbol
104 (earth bank). Minimum depth: 1 m. Minimum width: 1 m.
A pit larger than 5 m x 5 m should normally be exaggerated and drawn using symbol
104 (earth bank). Pits without steep sides are represented with symbol 111 (small
depression).
The symbol may not touch or overlap other brown symbols. Location is the centre ofgravity of the symbol, and the symbol is orientated to north.
Footprint: 10.5 m x 12 m.
Colour: brown.
113 Broken groundAn area of pits and/or knolls which is too intricate to be shown in detail, or other typesof rough and uneven ground that is clearly distinguishable but has little impact onrunnability.
The dots should be randomly distributed but not interfere with the representation ofimportant terrain features and objects.
The minimum number of dots is three (footprint 10 m x 10 m).
The maximum centre to centre distance between neighbouring dots is 0.6 mm.
The minimum centre to centre distance between neighbouring dots is 0.5 mm.
Contours should not be cut in broken ground areas.
The dots shall not be arranged to form a single point wide line.
Density: 3–4 dots / mm2 (9-13%).
Colour: brown.
114 Very broken groundAn area of pits and/or knolls, which is too intricate to be shown in detail, or other typesof rough and uneven ground that is clearly distinguishable and affects runnability.
The dots should be randomly distributed but not interfere with the representation ofimportant terrain features and objects.
The minimum number of dots is three (footprint 7 m x 7 m).
The maximum centre to centre distance between neighbouring dots is 0.38 mm.
The minimum centre to centre distance between neighbouring dots is 0.25 mm.
Contours should not be cut in broken ground areas.
The dots shall not be arranged to form a single point wide line.
Density: 7–9 dots / mm2 (22-28%).
Colour: brown.
115 Prominent landform feature
The feature must be very clearly distinguishable from its surroundings.
Location is the centre of gravity of the symbol, which is orientated to north.
The symbol may not touch or overlap other brown symbols.
Footprint: 13.5 m x 11.5 m.
Colour: brown.

3.2 Rock and boulders
Rock is a special category of landform. The inclusion of rock gives useful information about danger andrunnability as well as providing features for map reading and control points. Rock is shown in black to distinguishit from other landform features. Care must be taken to make sure that rock features such as cliffs fit with theshape and fall of the ground as shown by contours.

0.35
0.12

0.4 (OM) 201 Impassable cliff
0.5 (CC)A cliff, quarry or earth bank that is so high and steep that it is impossible to pass/climb

min. 0.6 (OM)min.

or is dangerous.
For vertical rock faces the tags may be omitted if space is short. Ends of the top line
min. 0.7 (OM) may be rounded or square. For plan shape representation, the minimum width is 0.35
mm. Shorter tags may be used at the ends.
The gap between two impassable cliffs or between impassable cliffs and otherimpassable feature symbols must exceed 0.3 mm on the map.
When an impassable cliff drops straight into water, making it impossible to passunder the cliff along the water’s edge, the bank line is omitted or the tags shall clearlyextend over the bank line. An impassable cliff should interplay with the contour lines.
Minimum length: 0.6 mm (footprint 9 m).
Colour: black.
202 Cliff

0.2
A passable cliff or quarry. Minimum height: 1 m.
0.4 (OM)

0.2
0.12 0.5 (CC)min. 0.6 (OM)
min. 0.4 (OM)
min. 0.65 (OM)

0.7 (OM)
0.16

0.8
0.7
0.8

If the direction of fall of the cliff is not apparent from the contours, or to improve
legibility, short tags may be drawn in the direction of the downslope.
For non-vertical cliffs, the tags should be drawn to show the full horizontal extent.
Ends of the top line may be rounded or square. A passage between two cliffs must be
at least 0.2 mm. A cliff should interplay with the contour lines.
Minimum length: 0.6 mm (footprint 9 m).
Crossing a cliff will normally slow progress.
Colour: black.

203 Rocky pit or cave
Rocky pits, holes, caves or mineshafts which may constitute a danger to the competitor. Minimum depth: 1 m.
Location is the centre of gravity of the symbol, and the symbol shall be orientated tonorth, except for caves with a distinct entrance, where the symbol should point into
the cave.
Rocky pits larger than 5 m in diameter should be exaggerated and represented using
cliff symbols (201, 202).
Footprint: 10.5 m x 12 m.
Colour: black.

1715

ø 0.4max. 2.0 (CC)(ø 0.5)

ø 0.6
max. 2.0 (CC)(ø 0.5)

min.

0.8

0.3
ø 0.2

0.8
0.8

max. 2.0 (CC)(0.96)

18

204 Boulder
A distinct boulder (should be higher than 1 m), which is immediately identifiable on the
ground. Groups of boulders are represented using symbol 207 (boulder cluster) or aboulder field symbol (208, 209).
To be able to show the distinction between neighbouring (closer than 30 metres apart)boulders with significant difference in size, it is permitted to enlarge the symbol to
0.5 mm for some of the boulders.
Footprint: 6 m x 6 m (7.5 m x 7.5 m).
Colour: black.
205 Large boulder
A particularly large and distinct boulder. A large boulder should be more than 2 m high.
To be able to show the distinction between neighbouring (closer than 30 metres apart)large boulders with significant difference in size, it is permitted to reduce the size ofthe symbol to 0.5 mm for some of the boulders.
Footprint: 9 m x 9 m (7.5 m x 7.5 m).
Colour: black.
206 Gigantic boulder
A rock pillar or gigantic boulder that is so high and steep that it is impossible topass/climb.
The gap between gigantic boulders or between gigantic boulders and other impassable feature symbols must exceed 0.3 mm on the map.
Minimum width: 0.8 mm (footprint 12 m). Minimum width (white inside area): 0.2 mm(footprint 3 m).
Colour: black.
207 Boulder cluster
A distinct group of boulders so closely clustered together that they cannot be marked
individually. The boulders in the cluster should be higher than 1 metre.
A boulder cluster must be easily identifiable as a group of boulders.
To be able to show the distinction between neighbouring (maximum 30 metres apart),boulder clusters with significant difference in boulder size, it is permitted to enlarge
this symbol by 20% (edge length 0.96 mm) for some of the boulder clusters.
The symbol is orientated to north.
Footprint: 12 m x 10 m.
Colour: black.

208 Boulder field
An area which is covered with so many scattered blocks of stone that they cannot bemarked individually, is shown with randomly placed and orientated solid triangles with
0.6
0.8
sides of ratio 8:6:5 (inner angles: 92.9, 48.5, 38.6). A boulder field will generally not
0.5(12–16%) impact runnability. If the runnability of the boulder field is reduced, symbol 209 (denseboulder field) should be used or the symbol should be combined with a stony groundmax. 1.2 (CC)symbol.
A minimum of two triangles should be used. One triangle may be used if it is combinedwith other rock symbols (for instance directly below cliff symbols (201, 202), adjacentmin. 0.75 (CC)to boulder symbols (204-206) or combined with stony ground symbols (210-212).
The maximum centre to centre distance between neighbouring triangles is 1.2 mm.
The minimum centre to centre distance between neighbouring triangles is 0.75 mm.
Density: 0.8–1 symbol / mm2 (12–16%). To be able to show obvious height differences within a boulder field, it is permitted to enlarge some of the triangles to 120%.
Footprint of individual triangle: 12 m x 6 m.
Colour: black.

209 Dense boulder field
An area which is covered with so many blocks of stone that they cannot be marked
individually and the runnability is affected, is shown with randomly placed and0.6
orientated solid triangles with sides of ratio 8:6:5 (inner angles: 92.9, 48.5, 38.6). A
0.8
0.5
minimum of two triangles must be used.
max. 0.6 (CC)The maximum centre to centre distance between neighbouring triangles is 0.6 mm.
(31–47%)
Density: 2–3 symbols / mm2 (31%-47%). To be able to show obvious height differences within a boulder field, it is permitted to enlarge some of the triangles to 120%.
min.
Footprint of individual triangle: 12 m x 6 m.
Colour: black.
210 Stony ground, slow running
Stony or rocky ground which reduces runnability to about 60-80% of normal speed.
The dots should be randomly distributed but not interfere with the representation ofimportant terrain features and objects.
The minimum number of dots is three (footprint 10 m x 10 m).
(9–13%) The maximum centre to centre distance between neighbouring dots is 0.6 mm.
The minimum centre to centre distance between neighbouring dots is 0.45 mm.
Density: 3-4 dots / mm2 (9-13%).
To avoid confusion with symbol 416 (distinct vegetation boundary), the dots should
not be arranged to form a line.
Colour: black.

max. 0.6 (CC)
ø 0.2
min.

ø 0.2

min.

ø 0.2

min.

211 Stony ground, walkStony or rocky ground which reduces the runnability significantly (to about 20-60% of
normal speed).
The dots should be randomly distributed but not interfere with the representation ofimportant terrain features and objects.
(19–25%) The minimum number of dots is three (footprint 8 m x 8 m).
The maximum centre to centre distance between neighbouring dots is 0.4 mm.
The minimum centre to centre distance between neighbouring dots is 0.32 mm.
Density: 6-8 dots / mm2 (19-25%).
To avoid confusion with symbol 416 (distinct vegetation boundary), the dots should
not be arranged to form a line.
Colour: black.
212 Stony ground, fightStony or rocky ground which is hardly passable (less than 20% of normal speed).
The dots should be randomly distributed but not interfere with the representation ofimportant terrain features and objects.
The minimum number of dots is three (footprint 7 m x 7 m).
(31–38%) The maximum centre to centre distance between neighbouring dots is 0.32 mm.
The minimum centre to centre distance between neighbouring dots is 0.25 mm.
Density: 10–12 dots / mm2 (31–38%).
To avoid confusion with symbol 416 (distinct vegetation boundary), the dots should
not be arranged to form a line.
Colour: black.
45°

ø 0.1650%(10%)
0.45 (CC)min.

213 Sandy groundAn area of soft sandy ground where runnability is reduced to less than 80% of normal
speed.
The symbol is orientated to north.
Minimum area: 1 mm x 1 mm (footprint 15 m x 15 m).
Colour: yellow 50%, black (10%).
19
15

min.

214 Bare rock
A runnable area of rock without earth or vegetation should be shown as bare rock.
An area of rock covered with grass, moss or other low vegetation, shall not be shown
25 %using the bare rock symbol.
An area of less runnable bare rock should be shown using a stony ground symbol(210-212).
Minimum area: 1 mm x 1 mm (footprint 15 m x 15 m).
Colour: grey or black 25%.

0.10
0.10
0.10
min.

20

215 Trench
Rocky or artificial trench. Minimum depth should be 1 m.
Minimum length: 2 mm (footprint 30 m).
Shorter trenches may be exaggerated to the minimum graphical dimension.
Impassable trenches shall be represented using symbol 201 (impassable cliff).
Collapsed and easily crossable trenches should be mapped as erosion gullies.
Colour: black.

3.3 Water and marsh
This group includes both open water and special types of vegetation caused by the presence of water (marsh).
The classification is important because it indicates runnability and provides features for map reading and control
points. A black line around a water feature indicates that it is uncrossable. The features listed in this section may
only contain water in some seasons. Marsh symbols are combined with area symbols for openness (yellow) andrunnability (green and yellow).
301 Uncrossable body of water
The black bank line emphasises that the feature is uncrossable.
100% Dominant areas of water may be shown with 70% colour. Small areas of water andbodies of water that have narrow parts shall always be shown with full colour.
0.18
Minimum width: 0.3 mm (inside). Minimum area: 0.5 mm2 (inside).
Colour: blue, black.
min. 0.7 (OM)

Minimum width 0.3 (IM)302 Shallow body of water
Minimum width 0.3 (IM) 0.25
A shallow seasonal or periodic body of water may be represented using a dashed0.10
outline. Small shallow water bodies may be represented as 100% blue (without an
50% outline). Minimum width: 0.3 mm (inside).
1.25

min. 0.7 (OM)

0.7 (OM)
0.8 (OM) 0.18

0.30
min.

0.18
min.

0.18
1.25

0.25

min.

0.25

0.18
(50%)
0.5 (CC)

min. 0.8 (OM)

Minimum width (full colour): 0.3 mm. Minimum area: 0.5 mm2 (inside).
Colour: blue (outline), blue 50%.
303 Waterhole
A water-filled pit or an area of water which is too small to be shown to scale. Locationis the centre of gravity of the symbol, and the symbol is orientated to north.
Footprint 10.5 m x 12 m.
Colour: blue.
304 Crossable watercourse
Should be at least 2 m wide.
Minimum length (isolated): 1 mm (footprint 15 m).
Colour: blue.
305 Small crossable watercourse
Minimum length (isolated): 1 mm (footprint 15 m)
Colour: blue.
306 Minor/seasonal water channel
A natural or man-made minor water channel which may contain water only intermittently.
Minimum length (isolated): two dashes (2.75 mm – footprint 41 m).
Colour: blue.
307 Uncrossable marsh
A marsh which is uncrossable or dangerous for the competitor. The black outlineemphasises that the feature is uncrossable. The black outline is omitted for boundaries between uncrossable marsh and symbol 301 (uncrossable body of water). The
symbol may be combined with a rough open land symbol (403, 404) to show openness. The symbol is orientated to north.
Minimum width: 0.3 mm (inside). Minimum area: 0.5 mm2 (inside).
Colour: blue (50%), black.

21
15

0.1
(33%)
0.3 (CC)min.

ø 0.250.45 (CC)
min.

0.9

0.25

0.1

min.

0.9 (OM)
0.18

0.45 (OM)
0.9 (OM)
0.18

0.9 (OM)

22309 Narrow marsh
A marsh or trickle of water which is too narrow (less than about 5 m wide) to be shownwith the marsh symbol.
Minimum length (isolated): two dots (0.7 mm – footprint 10.5 m).
Colour: blue.

310 Indistinct marsh
An indistinct marsh, seasonal marsh or an area of gradual transition from marsh to
firm ground, which is crossable. The edge is generally indistinct and the vegetation
0.3 (CC) similar to that of the surrounding ground.
(26%) The symbol shall be combined with other symbols to show runnability and openness.
The symbol is orientated to north.
Minimum area: 2.0 mm x 0.7 mm (footprint 30 m x 10.5 m)
Colour: blue (26%).

0.9 (OM)

0.9 (OM)

308 Marsh
A crossable marsh, usually with a distinct edge.
The symbol shall be combined with other symbols to show runnability and openness.
The symbol is orientated to north.
Minimum area: 0.5 mm x 0.4 mm (footprint 7.5 m x 6 m).
Colour: blue (33%).

0.16

311 Well, fountain or water tank
A prominent well, fountain, water tank or captive spring.
The symbol is orientated to north.
Footprint: 13.5 m x 13.5 m.
Colour: blue.
312 Spring
A source of water.
Location is the centre of gravity of the symbol, and the symbol is orientated to open
downstream.
Footprint: 13.5 m x 7 m.
Colour: blue.
313 Prominent water feature
The symbol is orientated to north.
Footprint: 13.5 m x 13.5 m.
Colour: blue.

3.4 Vegetation
The representation of vegetation is important to the competitor because it affects runnability and visibility and it
also provides features for map reading.
COLOUR and RUNNABILITY
The basic principle is as follows:- white represents typical open forest,- yellow represents open areas divided into several categories,- green represents the density of the forest and undergrowthaccording to its runnability and is divided into several categories
The runnability depends on the nature of the vegetation (density of trees / scrub and undergrowth -bracken,
brambles, nettles, etc.), but runnability is also affected by marshes, stony ground, etc. which are shown byseparate symbols.
100
80
60

speed in typically
open forest

runnabilty (%)

Vegetation runnability is divided into
categories according to running speed(see section 2.3).

20
distance covered in 4 min.
200

100%

min.

ø 0.4
min.

0.7

600

800 1000 m

401 Open land
Open land that has a ground cover (grass, moss or similar) which offers better
runnability than typical open forest. If yellow coloured areas become dominant, ascreen (75% instead of full yellow) may be used.
May not be combined with other area symbols than symbol 113 (broken ground),symbol 208 (boulder field) and marsh symbols (308, 310).
Minimum area: 0.7 mm x 0.7 mm (footprint 10.5 m x 10.5 m).
Colour: yellow (or yellow 75%).

402 Open land with scattered trees
Areas with scattered trees or bushes in open land may be generalised by using a
regular pattern of large dots in the yellow screen. The dots may be white (scatteredtrees) or green (scattered bushes/thickets). Prominent individual trees may be added(74%) using symbol 417 (prominent large tree). If yellow coloured areas become dominant,a screen (75% instead of full yellow) may be used.
45
May not be combined with other area symbols than symbol 113 (broken ground),symbol 208 (boulder field) or marsh symbols (308, 310).
Minimum width: 1.5 mm (footprint 22.5 m).
Minimum area: 2 mm x 2 mm (footprint 30 m x 30 m).
Smaller areas must either be left out, exaggerated or shown using the symbol 401(open land).
The symbol is orientated to north.
Colour: yellow (or yellow 75%) with holes of white or green 50%.
23
15

50%

min.

(35%)
ø 0.5

0.8 (CC) 45

min.

406 Vegetation, slow running
An area with dense vegetation (low visibility) which reduces running to about 60-80%
20% of normal speed.
0.4
Where runnability is better in one direction, a regular pattern of white stripes is left in
1.5 (CC)
the screen to show the direction of better running.
Minimum area: 1 mm x 1 mm (footprint 15 m x 15 m).
Minimum width: 0.4 mm (footprint 6 m).
Colour: green 20%.

min.

(14%)
0.84 (CC)min.

24

404 Rough open land with scattered trees
Areas with scattered trees or bushes in rough open land may be generalised by usinga regular pattern of large dots in the yellow screen.
The dots may be white (scattered trees) or green (scattered bushes/thickets).
Only the white dot variant can be combined with symbol 407 (vegetation, slow
running, good visibility) or 409 (vegetation, walk, good visibility) to show reduced
runnability.
The symbol is orientated to north.
Minimum width: 1.5 mm (footprint 22.5 m). Minimum area: 2.5 x 2.5 mm (footprint
37.5 m x 37.5 m).
Smaller areas must either be left out, exaggerated or shown using symbol 403 (roughopen land).
Colour: yellow 50% with holes of white, or green 50% (yellow 35%).
405 Forest
Typical open forest for the particular type of terrain. If no part of the forest is easily
runnable then no white should appear on the map.
Minimum area: 1 mm x 1 mm (footprint 15 m x 15 m) for openings in screens of othercolours, except for 408 (vegetation, walk) where the minimum area is 0.7 mm x 0.7
mm (footprint 10.5 m x 10.5 m). For openings in 401 (open land), the minimum area is
0.7 mm x 0.7 mm (footprint 10.5 m x 10.5 m). For openings in 410 (vegetation, fight)
the minimum area is 0.55 mm x 0.55 (footprint 8 m x 8 m).
Colour: white.

min.

0.12

403 Rough open land
Heath, moorland, felled areas, newly planted areas (trees lower than ca. 1 m) or othergenerally open land with rough ground vegetation, heather or tall grass offering thesame runnability as typical open forest.
May be combined with symbol 407 (vegetation, slow running, good visibility) or 409(vegetation, walk, good visibility) to show reduced runnability.
Minimum area: 1 mm x 1 mm (footprint 15 m x 15 m).
Smaller areas must either be left out, exaggerated or shown using symbol 401 (openland).
Colour: yellow 50%.

407 Vegetation, slow running, good visibility
An area of good visibility and reduced runnability due to, for instance, undergrowth(brambles, heather, low bushes, cut branches). Running speed is reduced to about
60-80% of normal speed.
The symbol is orientated to north.
Minimum area: 1.5 mm x 1 mm (footprint 22.5 m x 15 m).
Colour: green (14%).

408 Vegetation, walkAn area with dense trees or thickets (low visibility) which reduce running to about 2050% 60% of normal speed.
0.4
Where runnability is better in one direction, a regular pattern of white / green 20%
1.5 (CC) stripes is left in the screen to show the direction of better running.
Minimum area: 0.7 mm x 0.7 mm (footprint 10.5 m x 10.5 m).
Minimum width: 0.3 mm (footprint 7.5 m).
Colour: green 50%.

min.

0.14
min.

409 Vegetation, walk, good visibility
An area of good visibility that is difficult to run through due to for instance undergrowth(brambles, heather, low bushes, cut branches). Running speed is reduced to about(33%) 20-60% of normal speed.
Areas of good visibility that are very difficult to run or impassable are represented
using symbol 410 (vegetation, fight) or 411 (vegetation, impassable).
0.42 (CC)The symbol is orientated to north.
Minimum area: 1 mm x 1 mm (footprint 15 m x 15 m).
Colour: green (33%).
410 Vegetation, fightAn area of dense vegetation (trees or undergrowth) which is barely passable.
Running reduced to less than about 20% of normal speed.
100%
For fairness reasons, areas that are really difficult to get through (10% and slower)
0.4
1.5 (CC) shall be represented using symbol 411 (vegetation, impassable).
Where runnability is better in one direction, a regular pattern of white / green 20% /green 50% stripes is left in the screen to show the direction of better running.
Minimum area: 0.55 mm x 0.55 mm (footprint 8 m x 8 m).
Minimum width: 0.25 mm (footprint 3.8 m)
Colour: green

min.

100%
(50%)

0.35
min.

ø 0.2

0.8 (CC)
(5%)

min.

411 Vegetation, impassable
An area of dense vegetation (trees or undergrowth) which is effectively impassable.
Most useful for narrow and small areas.
Minimum area: 0.8 mm x 0.8mm (footprint 12 m x 12 m).
Minimum width: 0.35 mm (footprint 5 m).
Colour: green and black 50% or green and black (50%) dot screen: 0.16 mm dots,
centre to centre distance 0.2 mm.
412 Cultivated land
Cultivated land, normally used for growing crops. Runnability may vary according to
the type of crops grown and the time of year. For agroforestry, symbol 405 (forest) or
402 (open land with scattered trees) may be used instead of yellow.
Since the runnability may vary, such areas should be avoided when setting courses.
The symbol is combined with symbol 709 (out of bounds area) to show cultivated landthat shall not be entered.
The symbol is orientated to north.
Minimum area: 3 mm x 3 mm (footprint 45 m x 45 m).
Colour: yellow, black (5%).

25
15ø 0.45

0.8 (CC)

(25%)

min.

0.85 (CC) 0.2

1.3
0.6
(16%)

min.

0.1
min.

0.45 (CC)ø 0.22
0.12

0.3

0.2
lengtharea

min.

413 Orchard
Land planted with trees or bushes, normally in a regular pattern.
The dot lines may be orientated to show the direction of planting.
Must be combined with either symbol 401 (open land) or 403 (rough open land).
May be combined with symbol 407 (vegetation, slow running, good visibility) or 409(vegetation, walk, good visibility) to show reduced runnability.
Minimum area: 2 mm x 2 mm (footprint 30 m x 30 m).
Colour: green (25%), yellow or yellow 50%.
414 Vineyard or similar
A vineyard or similar cultivated land containing dense rows of plants offering good or
normal runnability in the direction of planting. The lines shall be orientated to show thedirection of planting. Must be combined with either symbol 401 (open land) or symbol403 (rough open land).
Minimum area: 2 mm x 2 mm (footprint 30 m x 30 m).
Colour: green (16%), yellow or yellow 50%.
415 Distinct cultivation boundary
A boundary of symbol 412 (cultivated land) or a boundary between areas of cultivatedland when not shown with other symbols (fence, wall, path, etc.).
Minimum length: 2 mm (footprint 30 m).
Colour: black.
416 Distinct vegetation boundary
A distinct forest edge or vegetation boundary within the forest.
Very distinct forest edges and vegetation boundaries may be represented using thecultivation boundary symbol. Only one of the vegetation boundary symbols (black
dotted line or dashed green line) can be used on a map. For areas with a lot of rockfeatures, it is recommended to use the green dashed line for vegetation boundaries.
A disadvantage with a green line is that it cannot be used to show distinct vegetation
boundaries around and within symbols 410 (vegetation, fight) and 411 (vegetation,
impassable). An alternative for these situations is to use symbol 415 (distinct
cultivation boundary).
Minimum length, black dot implementation: 5 dots (2.5 mm – footprint 37 m).
Minimum length, green line implementation: 4 dashes (1.8 mm – footprint 27 m).
Colour: green and black 50% (dashed line) / black (dotted line).
417 Prominent large tree

0.18 Footprint: 13.5 m x 13.5 m.

0.9 (OM)

Colour: green.
418 Prominent bush or tree
Use sparingly, as it is easily mistaken for symbol 109 (small knoll) by the colour vision
impaired.
Footprint: 7.5 m x 7.5 m.
Colour: green.

0.5 (OM)

0.9 (OM)
0.9 (OM)

26

0.18

419 Prominent vegetation feature
The symbol is orientated to north.
Footprint: 13.5 m x 13.5 m.
Colour: green.

3.5 Man-made features
The road and track network provides important information for the competitor and the classification must be
clearly recognisable on the map. Of particular importance to the competitor is the classification of smaller paths.
Account must be taken not only of the width but also of how obvious the path is to the competitor.
Some man-made features constitute obstacles or barriers to the competitor and must be easily identifiable on
the map. Important examples are fences, walls, buildings and forbidden areas.
Other man-made features are important both for map reading and for control points.

0.14
50%
min.

501 Paved area
An area with a firm level surface such as asphalt, hard gravel, tiles, concrete or the
like. Paved areas should be bordered (or framed) by a thin black line where they havea distinct boundary.
Minimum area: 1 mm x 1 mm (footprint 15 m x 15 m).
Colour: brown 50%, black.

502 Wide road
The width should be drawn to scale, but not smaller than the minimum width (0.3 +2*0.14 mm – footprint 8.7 m)
The outer boundary lines may be replaced with other black line symbols, such as
0.14
symbol 516 (fence), 518 (impassable fence), 513 (wall) or 515 (impassable wall) if thefeature is so close to the road edge that it cannot practically be shown as a separate
50% symbol.
The space between the black lines is filled with brown (50%).
A road with two carriageways can be represented using two wide road symbols side
by side, keeping only one of the road edges in the middle.
Colour: brown 50%, black.

min. 0.3

0.35
0.25
0.35
3.0

min.
0.25
0.25
2.0
min.

0.25
0.18
1.0
min.

503 RoadA maintained road suitable for motor vehicles in all weather. Width less than 5 m.
Colour: black.
504 Vehicle track
A track or poorly maintained road suitable for vehicles only when travelling slowly. For
distinct junctions the dashes of the symbols are joined at the junction.
For indistinct junctions the dashes of the symbols are not joined.
Minimum length (isolated): two dashes (6.25 mm – footprint 94 m).
Colour: black.
505 Footpath
An easily runnable path, bicycle track or old vehicle track.
For distinct junctions the dashes of the symbols are joined at the junction.
For indistinct junctions the dashes of the symbols are not joined.
Minimum length (isolated): two dashes (4.25 mm – footprint 64 m)
Colour: black.
506 Small footpath
A runnable small path or (temporary) forest extraction track which can be followed atcompetition speed.
For distinct junctions the dashes of the symbols are joined at the junction.
For indistinct junctions the dashes of the symbols are not joined.
Minimum length (isolated): two dashes (2.25 mm – footprint 34 m).
Colour: black.
27
15

0.8

0.25
0.18

1.0

min.

0.25

2.0

0.14

0.45

min.

1.0

0.1

0.35 (CC)
1.5

min.

0.14

0.3 (OM)

0.14
min.

0.3 (OM)

0.2
0.14

min.
0.4 (CC)
0.2

0.8 x 0.8 (OM)
60° 0.4 (OM)
0.18
0.5 (OM)
0.25
min.
0.4

28

507 Less distinct small footpath
A runnable less distinct / visible small path or forestry extraction track.
Minimum length: two sections of double dashes (5.3 mm – footprint 79.5 m).
Colour: black.
508 Narrow ride or linear trace through the terrain
A forest ride or a prominent trace (forestry extraction track, sandy track, ski track)
through the terrain which does not have a distinct runnable path along it.
The definition of the symbol must be given on the map.
Runnability is shown using a slightly thicker line of yellow, green or white as background:
without outline: the same runnability as the surroundings.
Yellow 100%: easy running.
White in green: normal runnability.
Green 20%: slow running.
Green 50%: walk.
Minimum length: two dashes (4.25 mm – footprint 64 m).
Colour: black + white/green/yellow.
509 Railway
A railway or other kind of railed track.
If it is forbidden to run along the railway, it shall be combined with symbol 711 (out-oufbounds route). If it is forbidden to cross the railway, it must be combined with symbol
520 (out-of-bounds area) or 709 (out-of-bounds area).
Minimum length (isolated): two dashes (4 mm – footprint 60 m).
Colour: black.
510 Power line, cableway or skilift
Power line, cableway or skilift. The bars show the exact location of the pylons. Theline may be broken to improve legibility.
If a section of a power line, cableway or skilift goes along a road or path (and does notoffer significant additional navigational value) it should be omitted.
Minimum length (isolated): 5 mm (footprint: 75 m).
Colour: black.
511 Major power line
Major power lines should be drawn with a double line. The gap between the lines may
indicate the extent of the power line. The lines may be broken to improve legibility.
Very large carrying masts shall be represented in plan shape using symbol 521(building) or with symbol 524 (high tower).
Colour: black.
512 Bridge / tunnel
Bridges and tunnels are represented using the same basic symbols.
If it is not possible to get through a tunnel (or under a bridge), it shall be omitted.
Minimum length (of baseline): 0.4 mm (footprint 6 m).
Small bridges connected to a track/path are shown by centring a track dash on the
crossing. Tracks/paths are broken for water course crossings without bridges. A small
footbridge with no path leading to it is represented with a single dash.
Colour: black.

0.8 (OM)
0.14
ø 0.4

2.0 (CC)min.
2.0 (CC)

0.14
0.35

ø 0.4

min.
0.8 (CC)

513 WallA significant wall of stone, concrete, wood or other materials. Minimum height: 1 m.
Minimum length (isolated): 2.0 mm (footprint 30 m).
Colour: black.
514 Ruined wall
A ruined or less distinct wall. Minimum height 0.5 m.
Minimum length: two dashes (3.65 mm - footprint 55 m). If shorter, the symbol must
be exaggerated to the minimum length or changed to symbol 513 (wall).
515 Impassable wall

0.25 An impassable or uncrossable wall, normally more than 1.5 m high.
3.0 (CC)ø 0.6

Minimum length (isolated): 3 mm (footprint 45 m).
Colour: black.

min.
2.0 (CC)60°

0.4 (OM)

0.14

0.14

min.
0.35
0.14
2.0 (CC)

0.4 (OM)

min.

2.5 0.6 (CC)
0.25
0.4 (OM)

0.14

min.

1.0

YELLOW

GREEN

100%

50%

0.18

alternative BLACK

0.25 (33%)
0.75 (CC)min.

517 Ruined fence
A ruined or less distinct fence. If the fence forms an enclosed area, tags should beplaced inside.
Minimum length: two dashes (3.65 mm – footprint 55 m). If shorter, the symbol must
be exaggerated to the minimum length or changed to symbol 516 (fence).
Colour: black.
518 Impassable fence
An impassable or uncrossable fence, normally more than 1.5 m high.
If the fence forms an enclosed area, tags should be placed inside.
Minimum length (isolated): 2 mm (footprint 30 m).
Colour: black.
519 Crossing point
A way through or over a wall, fence or other linear feature, including a gate or stile.
For impassable features, the line shall be broken at the crossing point. For passablefeatures, the line shall not be broken if passing involves a degree of climb.
Colour: black.

0.6 (CC)
0.18

0.35

516 Fence
If the fence forms an enclosed area, tags should be placed inside.
Minimum length (isolated): 1.5 mm (footprint 22.5 m).
Colour: black.

520 Area that shall not be entered
An out-of-bounds area is a feature such as a private house, a garden, a factory or
another industrial area. Only contours and prominent features such as railways andlarge buildings shall be shown inside an out-of-bounds area. Vertical black stripes
may be used for areas where it is important to show a complete representation of theterrain (e.g. when a part of the forest is out-of-bounds).
The area shall be discontinued where a path or track goes through.
Out-of-bounds areas should be bounded by the black boundary line or another blackline symbol (e.g. fence). Overprint symbol 709 can be used for temporary out-ofbounds areas. The vertical black stripes version of the symbol is orientated to north.
An out-of-bounds area shall not be entered.
Minimum area: 1 mm x 1 mm (footprint 15 m x 15 m).
Colour: yellow + green 50%, or black (33%).

29
15

min.
0.5 x 0.5
0.2
65%

0.1
20%

0.25
min.
0.8 x 0.8 (OM) 0.16
0.5

522 Canopy
An accessible and runnable area with roof.
Minimum area (isolated): 0.6 mm x 0.6 mm (footprint 9 m x 9 m). Minimum (inside)width: 0.3 mm (footprint 4.5 m).
Colour: black 20%, black.
523 Ruin
A ruined building. The ground plan of a ruin is shown to scale, down to the minimum
size. Ruins that are so small that they cannot be drawn to scale may be represented
using a solid line.
Minimum area (outside measures): 0.8 mm x 0.8 mm (footprint 12 m x 12 m).
Colour: black.

0.16

524 High tower
A high tower or large pylon. If it is in a forest, it must be visible above the level of thesurrounding forest.
The symbol is orientated to north.
Footprint: 21 m x 21 m. Towers with a larger footprint must be represented using
symbol 521 (building).
Colour: black.

1.0 (OM)

525 Small tower
An obvious small tower, platform or seat.
Location is at the centre of gravity of the symbol.
The symbol is orientated to north.
Footprint: 15 m x 15 m.
Colour: black.

0.3
ø 0.8

1.0 (OM)

0.8 (OM)

0.16

0.16

526 Cairn
A prominent cairn, memorial stone, boundary stone or trigonometric point.
Minimum height: 0.5 m.
Footprint: 12 m x 12 m.
Colour: black.

0.16

527 Fodder rack
A fodder rack, which is free standing or attached to a tree.
Location is at the centre of gravity of the symbol.
The symbol is orientated to north.
Footprint: 13.5 m x 13.5 m.
Colour: black.

ø 0.140.9 (OM)
60°
0.9 (OM)

30

521 Building
A building is shown with its ground plan so far as the scale permits.
Buildings larger than 75 m x 75 m may be represented with a dark grey infill in urban
areas.
Passages through buildings must have a minimum width of 0.3 mm (footprint 4.5 m).
Buildings within forbidden areas are generalised.
Areas totally contained within a building shall not be mapped (they shall be represented as being part of the building). Minimum gap indicating a passage between
buildings and between buildings and other impassable features should be 0.25 mm.
Minimum area: 0.5 mm x 0.5 mm (footprint 7.5 m x 7.5 m).
Colour: black (or black 65%, black).

0.4 (OM)
0.14
2.0 (CC)

45°

528 Prominent line feature
A prominent man-made line feature. For example, a low pipeline (gas, water, oil, heat,etc.) or a bobsleigh/skeleton track that is clearly visible. The definition of the symbol
must be given on the map.
Minimum length: 1.5 mm (footprint 22.5 m).
Colour: black.

529 Prominent impassable line feature
An impassable man-made line feature. For example, a high pipeline (gas, water, oil,
0.6 (CC)
0.14
0.4 (OM) heat, etc.) or a bobsleigh/skeleton track. The definition of the symbol must be given
0.25 on the map.
45°
Minimum length: 2 mm (footprint 30 m).
2.0 (CC)
Colour: black.

0.8 (OM)

0.16

0.8 (OM)
0.8 (OM)

0.16

530 Prominent man-made feature – ring
Location is at the centre of gravity of the symbol.
Footprint: 12 m x 12 m.
Colour: black.
531 Prominent man-made feature – x
Location is at the centre of gravity of the symbol, and the symbol is orientated to north.
Footprint: 12 m x 12 m.
Colour: black.

31
15

3.6 Technical symbols

0.1

min.
4 mm

ø 0.3

0.1

219 1.5
451

32

0.18

601 Magnetic north line
Magnetic north lines are lines placed on the map pointing to magnetic north, parallelto the sides of the paper. Their spacing on the map shall be 20 mm on the map which
represents 300 m on the ground at the scale of 1:15 000. If the map is enlarged to
1:10 000, the spacing of the lines will be 30 mm on the map.
North lines shall be broken to improve the legibility of the map, for instance where
they would obscure small features. In areas with very few water features, blue lines
may be used.
Colour: black or blue.
602 Registration markAt least three registration marks should be placed within the frame of a map in a nonsymmetrical position. These can be used for course overprinting when overprinting
on already printed maps. In addition, it allows a check of colour registration whenprinting colours separately.
Colour: all printing colours.
603 Spot height
Spot heights are used for the rough assessment of height differences. The height isgiven to the nearest metre. Water levels are given without the dot. Spot heights must
only be used where they do not conflict with other symbols.
Colour: black.

3.7 Overprinting symbols Note: dimensions are specified in mm at the printed scale of
1:15 000. Drawings in this section are at 1:15 000 also.
The sizes of the overprinting symbols are given for the map scale 1:15 000. For larger map scales the symbols
shall be enlarged proportionally (to 150% for 1:10 000, to 300% for 1:5 000).
All overprint symbols shall be printed over the map content (transparently). They shall never mask out other map
details.
701 Start
The place where the orienteering starts. The centre of the triangle shows the precise
0.35
6.0
position where the orienteering course starts. The start must be on a clearly identifiable point on the map. The triangle points in the direction of the first control.
Colour: purple.

0.6
2.5

1
1

0.35

ø 5.0 (CC)705 Course line
Where controls are to be visited in order, the sequence is shown using straight lines
from the start to the first control and then from each control to the next one. Sectionsof lines should be omitted to leave important detail showing. The line should be drawn
via mandatory crossing points. There should be gaps between the line and the control
circle in order to increase the readability of the underlying detail close to the control.
Colour: purple.

0.35

9

ø 4.0 (CC)0.35

ø 6.0 (CC)
2.0

0.5
0.35

min.

703 Control point
For point features, the centre of the circle shall be the centre of the symbol. For line
and area features, the centre of the circle shows the precise position of the control
marker. Controls shall only be placed on points that are clearly identifiable on themap.
Sections of the circle should be omitted to leave important detail showing.
Colour: purple.
704 Control number
The number of the control is placed close to the control point circle in such a way that it
does not obscure important detail. The numbers are orientated to north.
Font: sans-serif, 4.0 mm, non-bold, non-italic.
Colour: purple.

8

4.0

702 Map issue point
If there is a marked route to the start point, the map issue point is marked using thissymbol.
Colour: purple.

706 Finish
The end of the course.
Colour: purple.
707 Marked route
A marked route that is a part of the course. It is mandatory to follow the marked route.
Minimum length: 2 dashes (4.5 mm – footprint: 67.5 m).
Colour: purple.

33
15

0.7
min.

709 Out-of-bounds area
An out-of-bounds area. A bounding line may be drawn if there is no natural boundary,
0.8 (CC) 0.25
as follows:– a solid line indicates that the boundary is marked continuously (tapes, etc.) in the(29%)
terrain,45– a dashed line indicates intermittent marking in the terrain,
3.0– no line indicates no marking in the terrain.
min.
An out-of-bounds area shall not be entered.
Minimum area: 2 mm x 2 mm (footprint 30 m x 30 m).
Colour: purple (29%).

0.25

0.5

0.6 (IM)
0.35
3.0

4.0–6.0 (CC)

min.

3.0

4.0
4.0

1.33

712 First aid post
The location of a first aid post.
Colour: purple.

0.4

713 Refreshment point
The location of a refreshment point which is not at a control.
Colour: purple.

3.5 (OM)
3.5 (OM)
2.1 (OM)

710 Crossing point
A crossing point, for instance through or over a wall or fence, across a road or railway,
through a tunnel or out-of-bounds area, or over an uncrossable boundary is drawn on
the map with two lines curving outwards. The lines shall reflect the length of thecrossing.
Colour: purple.
711 Out-of-bounds route
A route which is out-of-bounds. Competitors are allowed to cross directly over a
forbidden route, but it is forbidden to go along it.
An out-of-bounds route shall not be used.
Minimum length: 2 symbols (6 mm – footprint 90 m)
Colour: purple.

0.35

34

708 Out-of-bounds boundary
A boundary which it is not permitted to cross.
An out-of-bounds boundary shall not be crossed.
Minimum length: 1 mm (footprint: 15 m).
Colour: purple.

3.8 Precise definition of symbols
Note: dimensions are specified in mm.
All drawings are magnified (10×) for clarity. The centre of gravity is marked (x) when it is not unambiguous.

104

107

111

0.18 (0.25)

115

112, 303
0.18

0.18
0.40
0.14

0.75

0.50

0.9

0.8

0.197

0.75

0.498

0.8

201

0.9

0.18

0.7

202

0.9

203

207

208

0.16
0.2

0.35

0.8
0.40

0.40
0.12

0.12

0.50

311

0.8

0.50

313
0.9
0.9

516

0.16

0.9

0.9

518

0.14

0.14

0.40

0.4

0.6

0.14

529

0.14

2.0

713

45°

0.25

45°

60°

2.5

0.14

0.18

528

0.25

60°

2.0
0.40

0.9

72°

0.9

0.9

419

0.18

0.216

0.18

0.6
0.8

417

0.18
0.9

0.5

0.8

0.7

312

0.8

0.489

3.5
2.0

0.14

0.4

524

525

ø 0.8
0.16

1.1

0.6

526

1.4

0.8
1.879

1.0

1.4

0.5

527

530

531

2.1

0.16

0.354
0.9

3.5

0.4

0.16 0.16
0.14
1.0

0.308

60° 0.16
0.9

0.8

0.8
0.16

0.8

35
15