Information: - In geology, bedrock is the lithified rock that lies under the loose softer material (regolith) at the surface of the Earth or other terrestrial planet. The broken and weathered regolith includes soil and subsoil. The surface of the bedrock beneath soil cover is known as rockhead in engineering geology and its identification by digging, drilling or geophysical methods is an important task in most civil engineering projects. Superficial deposits (also known as drift) can be extremely thick, such that the bedrock lies hundreds of meters below the surface. - resund or Oresund is a strait which forms the DanishSwedish border, separating Sjlland (Denmark) from Skane (Sweden). The strait has a length of and the width varies from to . It is wide at its narrowest point between Helsingr in Denmark and Helsingborg in Sweden. - In geography, latitude is a geographic coordinate that specifies the northsouth position of a point on the Earth's surface. Latitude is an angle (defined below) which ranges from 0 at the Equator to 90 (North or South) at the poles. Lines of constant latitude, or parallels, run eastwest as circles parallel to the equator. Latitude is used together with longitude to specify the precise location of features on the surface of the Earth. Approximations employed. Two levels of abstraction are employed in the definition of these coordinates. In the first step the physical surface is modelled by the geoid, a surface which approximates the mean sea level over the oceans and its continuation under the land masses. The second step is to approximate the geoid by a mathematically simpler reference surface. The simplest choice for the reference surface is a sphere, but the geoid is more accurately modelled by an ellipsoid. The definitions of latitude and longitude on such reference surfaces are detailed in the following sections. Lines of constant latitude and longitude together constitute a graticule on the reference surface. The latitude of a point on the "actual" surface is that of the corresponding point on the reference surface, the correspondence being along the normal to the reference surface which passes through the point on the physical surface. Latitude and longitude together with some specification of height constitute a geographic coordinate system as defined in the specification of the ISO 19111 standard. - Finland , officially the Republic of Finland, is a sovereign state in Northern Europe. A peninsula with the Gulf of Finland to the south and the Gulf of Bothnia to the west, the country has land borders with Sweden to the northwest, Norway to the north, and Russia to the east. Estonia is south of the country across the Gulf of Finland. Finland is a Nordic country situated in the geographical region of Fennoscandia, which also includes Scandinavia. Finland's population is 5.5 million (2014), staying roughly on the same level over the past two decades. The majority of the population is concentrated in the southern region. In terms of area, it is the eighth largest country in Europe and the most sparsely populated country in the European Union. - Riga is the capital and the largest city of Latvia. With 696,593 inhabitants (2015), Riga is the largest city of the Baltic states and home to one third of Latvia's population. The city lies on the Gulf of Riga, at the mouth of the Daugava. Riga's territory covers and lies between above sea level, on a flat and sandy plain. - Gotland County ("Gotlands lan") is a county or "lan" of Sweden. Gotland is located in the Baltic Sea to the east of Oland, and is the largest of Sweden's islands. Counties are usually sub-divided into municipalities, but Gotland County only consists of one municipality: Gotland Municipality. Gotland County is the only county in Sweden that is not governed by a county council. The municipality handles the tasks that are otherwise handled by the county council, mainly health care and public transport. Like other counties, Gotland has a County Administrative Board that oversees implementation of the Swedish state government. Both the County Administrative Board and the municipality have their seat in the largest city Visby, with over 22,000 inhabitants. - The Gulf of Riga, Bay of Riga, or Gulf of Livonia is a bay of the Baltic Sea between Latvia and Estonia. - Gutnish, or Gotlandic, is a Scandinavian language spoken on the island of Gotland in Sweden generally considered to be a dialect of Swedish. Most Gotlanders speak Standard Swedish and contemporary Gutnish has been significantly influenced by it. It is an open issue whether the traditional Gutnish (sometimes called Older Gutnish) dialect, which was close to Old Gutnish, should be considered an independent language or a dialect of Swedish. There are major efforts to revive the traditional variety of Gutnish, and Gutamalsgillet (Gutnish Language Guild) is organizing classes and meetings for speakers of traditional Gutnish. According to the guild's webpage, there are now 1500 people using Gutnish on Facebook. - Sweden, officially the Kingdom of Sweden (Swedish: ), is a Scandinavian country in Northern Europe. It borders Norway to the west and Finland to the east, and is connected to Denmark in the southwest by a bridge-tunnel across the Oresund. At , Sweden is the third-largest country in the European Union by area, with a total population of 10.0 million. Sweden consequently has a low population density of , with the highest concentration in the southern half of the country. Approximately 85% of the population lives in urban areas. - Faro is a Baltic Sea island just off north of the island of Gotland, itself off mainland Sweden's southeastern coast. It is the second-largest island in the province and it is a popular summer resort. It has its own dialect ("Faroymal", a dialect of Gutnish), claimed to be the oldest language in Sweden. Formerly a socken which includes the Gotska Sandon island, on 1January 2016, it was reconstituted into the administrative area Faro District. - The Kattegat or Kattegatt is a sea area bounded by the Jutlandic peninsula in the west, the Danish straits islands of Denmark to the south and the provinces of Vastergotland, Scania, Halland and Bohuslan in Sweden in the east. The Baltic Sea drains into the Kattegat through the Danish Straits. The sea area is a continuation of the Skagerrak and may be seen as a bay of the Baltic Sea or the North Sea or, as in traditional Scandinavian usage, neither of these. - Cast iron is a group of iron-carbon alloys with a carbon content greater than 2%. Its usefulness derives from its relatively low melting temperature. The alloy constituents affect its colour when fractured: white cast iron has carbide impurities which allow cracks to pass straight through; grey cast iron has graphite flakes which deflect a passing crack and initiate countless new cracks as the material breaks; ductile cast iron has spherical graphite "nodules" which stop the crack from further progressing. - Longitude (or , Australian and British also ), is a geographic coordinate that specifies the east-west position of a point on the Earth's surface. It is an angular measurement, usually expressed in degrees and denoted by the Greek letter lambda (). Meridians (lines running from the North Pole to the South Pole) connect points with the same longitude. By convention, one of these, the Prime Meridian, which passes through the Royal Observatory, Greenwich, England, was allocated the position of zero degrees longitude. The longitude of other places is measured as the angle east or west from the Prime Meridian, ranging from 0 at the Prime Meridian to +180 eastward and 180 westward. Specifically, it is the angle between a plane containing the Prime Meridian and a plane containing the North Pole, South Pole and the location in question. (This forms a right-handed coordinate system with the axis (right hand thumb) pointing from the Earth's center toward the North Pole and the axis (right hand index finger) extending from Earth's center through the equator at the Prime Meridian.) - The Hittites were an Ancient Anatolian people who established an empire centered on Hattusa in north-central Anatolia around 1600 BC. This empire reached its height during the mid-14th century BC under Suppiluliuma I, when it encompassed an area that included most of Anatolia as well as parts of the northern Levant and Upper Mesopotamia. Between the 15th and 13th centuries BC the Hittite Empire came into conflict with the Egyptian Empire, Middle Assyrian Empire and the empire of the Mitanni for control of the Near East. The Assyrians eventually emerged as the dominant power and annexed much of the Hittite empire, while the remainder was sacked by Phrygian newcomers to the region. After c. 1180 BC, during the Bronze Age collapse, the Hittites splintered into several independent "Neo-Hittite" city-states, some of which survived until the 8th century BC before succumbing to the Neo-Assyrian Empire. - Gdask (German: ) is a Polish city on the Baltic coast. It is the capital of the Pomeranian Voivodeship, Poland's principal seaport and is also the centre of the country's fourth-largest metropolitan area. - A weapon, arm, or armament is any device used with intent to inflict damage or harm to living beings, structures, or systems. Weapons are used to increase the efficacy and efficiency of activities such as hunting, crime, law enforcement, self-defense, and warfare. In a broader context, weapons may be construed to include anything used to gain a strategic, material or mental advantage over an adversary. - A World Heritage Site is a landmark which has been officially recognized by the United Nations, specifically by UNESCO. Sites are selected on the basis of having cultural, historical, scientific or some other form of significance, and they are legally protected by international treaties. UNESCO regards these sites as being important to the collective interests of humanity. - Gypsum is a soft sulfate mineral composed of calcium sulfate dihydrate, with the chemical formula CaSO2HO. It is widely mined and is used as a fertilizer, and as the main constituent in many forms of plaster, blackboard chalk and wallboard. A massive fine-grained white or lightly tinted variety of gypsum, called alabaster, has been used for sculpture by many cultures including Ancient Egypt, Mesopotamia, Ancient Rome, Byzantine empire and the Nottingham alabasters of Medieval England. Mohs scale of mineral hardness, based on scratch Hardness comparison, defines hardness value 2 as gypsum. It forms as an evaporite mineral and as a hydration product of anhydrite. - The Gulf of Bothnia is the northernmost arm of the Baltic Sea. It is situated between Finland's west coast and Sweden's east coast. In the south of the gulf lie the Aland Islands, between the Sea of Aland and the Archipelago Sea. - Iron is a chemical element with symbol Fe (from ) and atomic number 26. It is a metal in the first transition series. It is by mass the most common element on Earth, forming much of Earth's outer and inner core. It is the fourth most common element in the Earth's crust. Its abundance in rocky planets like Earth is due to its abundant production by fusion in high-mass stars, where it is the last element to be produced with release of energy before the violent collapse of a supernova, which scatters the iron into space. - A sinkhole, also known as a cenote, sink, sink-hole, shakehole, swallet, swallow hole, or doline (the different terms for sinkholes are often used interchangeably), is a depression or hole in the ground caused by some form of collapse of the surface layer. Most are caused by karst processesfor example, the chemical dissolution of carbonate rocks or suffosion processes. Sinkholes vary in size from both in diameter and depth, and vary in form from soil-lined bowls to bedrock-edged chasms. Sinkholes may form gradually or suddenly, and are found worldwide. - An island or isle is any piece of sub-continental land that is surrounded by water. Very small islands such as emergent land features on atolls can be called islets, skerries, cays or keys. An island in a river or a lake island may be called an eyot or ait, and a small island off the coast may be called a holm. A grouping of geographically or geologically related islands is called an archipelago, e.g. the Philippines. - Wrought iron is an iron alloy with a very low carbon (less than 0.08%) content in contrast to cast iron (2.1% to 4%). It is a semi-fused mass of iron with fibrous slag inclusions (up to 2% by weight) which gives it a "grain" resembling wood, that is visible when it is etched or bent to the point of failure. Wrought iron is tough, malleable, ductile, corrosion-resistant and easily welded. Before the development of effective methods of steelmaking and the availability of large quantities of steel, wrought iron was the most common form of malleable iron. A wrought product is one that has been mechnically worked by forging, extruding, rolling, hammering, etcetera, to change its form and properties. Wrought iron is a particular worked iron product that is seldom produced today as other cheaper, superior products have substituted. - Gotska Sandon (literally translated as Gotlandic Sand Island) is an uninhabited Swedish island, since 1909 also a national park, situated north of Faro in the Baltic Sea. Legally a part of Gotland province, it is approximately long and wide, with a total area of approximately . The island consists mostly of sand and is dominated by beaches, dunes and especially pine forests. Aside from a colony of grey seals, the higher fauna is not very rich. However, the island is home to many rare insects and plants, including the Kashubian vetch and several species of orchid. During the summer, there are regular boat tours from Faro Island and Nynashamn on the mainland. - Iron ores are rocks and minerals from which metallic iron can be economically extracted. The ores are usually rich in iron oxides and vary in color from dark grey, bright yellow, or deep purple to rusty red. The iron itself is usually found in the form of magnetite (72.4% Fe), hematite (69.9% Fe), goethite (62.9% Fe), limonite or siderite (48.2% Fe). - A rock shelter (also known as a rockhouse, crepuscular cave, bluff shelter, or abri) is a shallow cave-like opening at the base of a bluff or cliff. - A sea is a large body of salt water that is surrounded in whole or in part by land. More broadly, "the sea" is the interconnected system of Earth's salty, oceanic watersconsidered as one global ocean or as several principal oceanic divisions. The sea moderates Earth's climate and has important roles in the water cycle, carbon cycle, and nitrogen cycle. Although the sea has been traveled and explored since prehistory, the modern scientific study of the seaoceanographydates broadly to the British "Challenger" expedition of the 1870s. The sea is conventionally divided into up to five large oceanic sectionsincluding the International Hydrographic Organization's four named oceans (the Atlantic, Pacific, Indian, and Arctic) and the Southern Ocean; smaller, second-order sections, such as the Mediterranean, are known as "seas". - A grotto (Italian "grotta" and French "grotte") is a natural or artificial cave used by humans in both modern times, and historically or prehistorically. Naturally occurring grottoes are often small caves near water that are usually flooded or liable to flood at high tide. Sometimes, artificial grottoes are used as garden features. The "Grotta Azzurra" at Capri and the grotto at the villa of Tiberius in the Bay of Naples are examples of popular natural seashore grottoes. - Gotland Municipality is a municipality that covers the entire island of Gotland in Sweden. The city of Visby is the municipality's seat. - A sea cave, also known as a littoral cave, is a type of cave formed primarily by the wave action of the sea. The primary process involved is erosion. Sea caves are found throughout the world, actively forming along present coastlines and as relict sea caves on former coastlines. Some of the largest wave-cut caves in the world are found on the coast of Norway, but are now 100 feet or more above present sea level. These would still be classified as littoral caves. By contrast, in places like Thailand's Phang Nga Bay, solutionally formed caves in limestone have been flooded by the rising sea and are now subject to littoral erosion, representing a new phase of their enlargement. - The United Nations Educational, Scientific and Cultural Organization (UNESCO) is a specialized agency of the United Nations (UN) based in Paris. Its declared purpose is to contribute to peace and security by promoting international collaboration through educational, scientific, and cultural reforms in order to increase universal respect for justice, the rule of law, and human rights along with fundamental freedom proclaimed in the United Nations Charter. It is the heir of the League of Nations' International Committee on Intellectual Cooperation. - Quartzite (from ) is a hard, non-foliated metamorphic rock which was originally pure quartz sandstone. Sandstone is converted into quartzite through heating and pressure usually related to tectonic compression within orogenic belts. Pure quartzite is usually white to grey, though quartzites often occur in various shades of pink and red due to varying amounts of iron oxide (FeO). Other colors, such as yellow, green, blue and orange, are due to other minerals. - The Little Belt is a strait between the island of Funen and the Jutland Peninsula in Denmark. It is one of the three Danish Straits that drain and connect the Baltic Sea to the Kattegat strait, which drains west to the North Sea and Atlantic Ocean. - Weathering is the breaking down of rocks, soil, and minerals as well as wood and artificial materials through contact with the Earth's atmosphere, waters, and biological organisms. Weathering occurs "in situ" (on site), that is, in the same place, with little or no movement, and thus should not be confused with erosion, which involves the movement of rocks and minerals by agents such as water, ice, snow, wind, waves and gravity and then being transported and deposited in other locations. - The Gulf of Finland is the easternmost arm of the Baltic Sea. It extends between Finland (to the north) and Estonia (to the south) all the way to Saint Petersburg in Russia, where the river Neva drains into it. Other major cities around the gulf include Helsinki and Tallinn. The eastern parts of the Gulf of Finland belong to Russia, and some of Russia's most important oil harbours are located farthest in, near Saint Petersburg (including Primorsk). As the seaway to Saint Petersburg, the Gulf of Finland has been and continues to be of considerable strategic importance to Russia. Some of the environmental problems affecting the Baltic Sea are at their most pronounced in the shallow gulf. - The Baltic Sea ( ; ) is a sea of the Atlantic Ocean, enclosed by Scandinavia, Finland, the Baltic countries, and the North European Plain. It includes the Gulf of Bothnia, the Bay of Bothnia, the Gulf of Finland, the Gulf of Riga, and the Bay of Gdask. The sea stretches from 53N to 66N latitude and from 10E to 30E longitude. A mediterranean sea of the Atlantic, with limited water exchange between the two bodies, the Baltic Sea drains through the Danish islands into the Kattegat by way of the straits of resund, the Great Belt, and the Little Belt. - Karst topography is a landscape formed from the dissolution of soluble rocks such as limestone, dolomite, and gypsum. It is characterized by underground drainage systems with sinkholes and caves. It has also been documented for weathering-resistant rocks, such as quartzite, given the right conditions. Subterranean drainage may limit surface water with few to no rivers or lakes. However, in regions where the dissolved bedrock is covered (perhaps by debris) or confined by one or more superimposed non-soluble rock strata, distinctive karst surface developments might be totally missing. - Limestone is a sedimentary rock, composed mainly of skeletal fragments of marine organisms such as coral, forams and molluscs. Its major materials are the minerals calcite and aragonite, which are different crystal forms of calcium carbonate (CaCO). - The Diocese of Visby is a division of the Church of Sweden consisting of Gotland. Its seat is Sankta Maria cathedral in old town of Visby. - The Great Belt,, is a strait between the major islands of Zealand ("Sjlland") and Funen ("Fyn") in Denmark. It is one of the three Danish Straits. - Water is a transparent and nearly colorless chemical substance that is the main constituent of Earth's streams, lakes, and oceans, and the fluids of most living organisms. Its chemical formula is HO, meaning that its molecule contains one oxygen and two hydrogen atoms, that are connected by covalent bonds. Water strictly refers to the liquid state of that substance, that prevails at standard ambient temperature and pressure; but it often refers also to its solid state (ice) or its gaseous state (steam or water vapor). It also occurs in nature as snow, glaciers, ice packs and icebergs, clouds, fog, dew, aquifers, and atmospheric humidity. - Visby is a locality and the seat of Gotland Municipality in Gotland County, on the island of Gotland, Sweden with 23,880 inhabitants, . Visby is also the episcopal see for the Diocese of Visby. The Hanseatic city of Visby is arguably the best-preserved medieval city in Scandinavia and since 1995, it is on the UNESCO World Heritage Site list. Among the most notable historical remains are the long town wall that encircles the town center, and a number of church ruins. - A cave is a hollow place in the ground, specifically a natural underground space large enough for a human to enter. Caves form naturally by the weathering of rock and often extend deep underground. The word "cave" can also refer to much smaller openings such as sea caves, rock shelters, and grottos. A cavern is a specific type of cave, naturally formed in soluble rock with the ability to grow speleothems. - The Atlantic Ocean is the second largest of the world's oceans with a total area of about . It covers approximately 20 percent of the Earth's surface and about 29 percent of its water surface area. It separates the "Old World" from the "New World". - Dolomite is an anhydrous carbonate mineral composed of calcium magnesium carbonate, ideally The term is also used for a sedimentary carbonate rock composed mostly of the mineral dolomite. An alternative name sometimes used for the dolomitic rock type is dolostone. - Scandinavia is a historical and cultural region in Northern Europe characterized by a common ethnocultural North Germanic heritage and mutually intelligible North Germanic languages. - The Lummelunda Cave ( Swedish : Lummelundagrottan , also known as the Rovarkulan , '' The Robbers ' Den '' ) is located in a nature reserve at Lummelunda north of Visby on Gotland , Sweden . The explored part of this karst cave is almost 4.5 km ( 2.8 mi ) , making it one of the longest caves in Sweden . It is created by the drainage water from the Martebo mire . The water forms a stream with its outlet in the Baltic Sea . In the 15th to 19th centuries , mills and an ironwork were set up by the stream . Although the entrance of the cave has been known for centuries , the main part of it was discovered by three teenage boys during the 1940s -- 50s . It is visited by around 100,000 people every year and is one of the major tourist attractions on Gotland . - A speleothem (Ancient Greek: "cave deposit"), commonly known as a cave formation, is a secondary mineral deposit formed in a cave. Speleothems typically form in limestone or dolostone solutional caves. The term "speleothem" as first introduced by Moore (1952), is derived from the Greek words "splaion" "cave" + "thema" "deposit". The definition of "speleothem" in most publications, specifically excludes secondary mineral deposits in mines, tunnels and on man-made structures. Hill and Forti more concisely defined "secondary minerals" which create speleothems in caves as; A "secondary" mineral is one which is derived by a physicochemical reaction from a primary mineral in bedrock or detritus and/or deposited because of a unique set of conditions in a cave; i.e., the cave environment has influenced the mineral's deposition. - Gotland (older spellings include Gottland or Gothland ,), "Gutland" in the local dialect Gutnish, is a province, county, municipality, and diocese of Sweden. It is Sweden's largest island. The province includes the small islands of Faro and Gotska Sandon to the north, as well as the even smaller Karlso Islands (Lilla and Stora) to the west. The population is 57,221, of which about 23,600 live in Visby, the main town. The island of Gotland and the other areas of the province of Gotland make up less than one percent of Sweden's total land area. - In the history of Europe, the Middle Ages or medieval period lasted from the 5th to the 15th century. It began with the fall of the Western Roman Empire and merged into the Renaissance and the Age of Discovery. The Middle Ages is the middle period of the three traditional divisions of Western history: classical antiquity, the medieval period, and the modern period. The medieval period is itself subdivided into the Early, High, and Late Middle Ages. - The North European Plain (or ), or Middle European Plain is a geomorphological region in Europe, mostly in Poland, Denmark, Germany, Belgium, the Netherlands (Low Countries), and a small part of northern France. - Ironwork is any weapon, artwork, utensil or architectural feature made of iron especially used for decoration. There are two main types of ironwork: wrought iron and cast iron. While the use of iron dates as far back as 4000BC, it was the Hittites who first knew how to extract it (see iron ore) and develop weapons. Use of iron was mainly utilitarian until the Middle Ages, it became widely used for decoration in the period between the 16th and 19th century. Given the paragraphs above, decide what entity has the relation 'located in the administrative territorial entity' with 'gotland municipality'.
Answer:
lummelunda cave