re!
ark and Mo
poe
Gaimshi a Has
Enjoy Izu OOshimything Izu
rev
Eyr!
jojnE
uided Tou
Gahit
W
"to Offer"""

Why is there a
black desert onthe mountain?

Why are Oshima Milk
Cookies famous?

Who is "Anko-san"?

Izu Oshima Geopark

How can plants
survive in thelava rocks?

"""

Why are there
shrines here?

So many amazing sights to see on Izu Oshima!

Your Geo Guide can help
answer these questions andmore as they take you around the Geopark.

I understandnow!

Your Geo Guide is certified by Izu Oshima Geopark and open for reservations!
Half Day Rate (2+Guests): 5,000 yen or more (excluding tax) *April, 2021
[Contact] Oshima Tourism general incorporated Association (TEL:+81-4992-2-2177)

Let's go first when we arrive at Okata Port!
Geo Station Okata Port

A Volcano Collection!

re hiking!
Check it out befoGeopark Exhibitionat the Summit Entrance【Opening】Sat, Sun, Holiday 9:30a.m.-15:00p.m.
Outer rim Lookout immediate side.
Geoguide is resident. You can also see
the video of the 1986 eruption!

AshitabaMilk

Ashitaba is a leafy green
vegetable in the carrot family
that is known for its hardiness. It’ s said it grows so fastthat it will completely regrow
the day after being picked.
Ashitaba has grownnaturally throughout the island
since old times
and has been avital part of theisland’ s culture.

Long ago Izu Oshima waso n c e c a l l e d “ H o l s te i nIsland” (after the breed ofcow) because of its
prosperous dairy farming
industry. Holstein cattle
prefer mild climates. Withits gentle sea breeze andmineral-rich grass, Izu
Oshima is the perfect place
for them to call home.

TokyoChofu Airporta Geopark
imshO
uIz
tosseAcc

HanedaAirportApprox.  hr.  min. by high speed jet ferry
Approx.  hr. by overnight cruise ship

Kanagawa

Izu Oshima
MotomachiPort orOkata Port

Contact
Tokaikisen/Reservations:
9:30am-8:00pm

Sagami
Bay+81-3-5472-9999

Atami'HSHQGLQJRQZHDWKHUDQGRFHDQFRQGLWLRQVVKLSVZLOOGHSDUWIURPHLWKHU0RWRPDFKL3RUWRI2NDWD3RUW
7KHWUDYHOURXWHRI.XULKDPD7DWH\DPD,WR,QDWRULDQG2VDQEDVKL3LHUVXEMHFWWRFKDQJHGHSHQGLQJRQWKHVHDVRQItoAtami Port

Approx.  min.

Getting to Izu Oshima By Plane
Chofu Airport

 min.

Tokyo
Bay

Osanbashi Pier

Getting to Izu Oshima By Ship
Tokyo/ Takeshiba

Tokyo/ Takeshiba

Transportation andAccommodation on Izu Oshima
Contact Oshima Tourism general incorporated Association (8:30am-5:00pm) TEL: 81-4992-2-2177+81-422-31-4191

7(/(0DLOJHRSDUN#WRZQRVKLPDWRN\RMS $SULO

entrance !

Uniqueunde fish habit
rwate
ar lavats createderupt fromions !
?

Chiba
Tateyama

Shizuoka
InatoriIZU
OSHIMA

Search traffic on the islandwith "Izu Oshima Navi",]X2VKLPD*HRSDUN3URPRWLRQ&RPPLWWHH([HFXWLYH2IILFH2VKLPD7RZQ7RXULVP'LYLVLRQ*HRSDUNFRRUGLQDWLRQXQLW

publication 0RWRPDFKL2VKLPDPDFKL7RN\R-DSDQ

ecret
Find the sPacific
OceanToshima
Niijima

Shikinejima
Kozushima

Sea route Cruise Ship
High-Speed Jet Ferry
Seasonal RouteAir route New Central Airlines

hearts on thdenolcanic islandevOshima
AirportContact
New Central/Reservations:Air ServiceKurihama

Enjoy the beautiful flowers
no matter the season!

Find the hidIzu Oshima Volcano Museum
The museum introduces guests to not just Izu
Oshima’ s volcano, but volcanoes from all overJapan and the world. Enjoy a screening of a
special video that showcases all of the secrets
and charm that Izu Oshima has to offer.
【Opening】9:00a.m.-5:00p.m. (Closed 11 Daysa Year)【Charge】Adults: 500 Yen, Elementaryand Junior High School Students: 250 Yen

Don’ t let the smell fool you, Kusaya is quitedelicious! This dish of salt-dried and fermented
fish is known for its pungent odor, but is a delicacy on Izu Oshima. While it might seem
strange, kusaya’ s preparation is theproduct of harsh island life, wherehistorically resources were hard tocome by to the remote island.

Kusaya!

Above the Okata Passenger Terminal on the second floor, you
can get the basic information and the latest information of Izu
Oshima Geopark. Please use it when you arrive to confirm
where you will go around, and when you return, to make yournext plan! 【Opening】The day when that departure port isOkada Port Akadareaer
atimm
SuRed Valley

Akadare’ s stunning
red canyons are the resultof the erosion of volcanic
deposits. It’ s a perfect spot
to take view other Izu
Islands on the sea
spreading in frontof the valley.

A black desert made fromvolcanic rock and ash Ura-Sabaku Desert
Strong winds blow
off plant seeds andgermination, maintaining this desert
landscape.

 Outer Rim Lookout
By viewing the blacklines on Mt. Mihara

 Pahoehoe lava flows of 1777-78

you can trace the lava

Less sticky lava may

flow created during

A fissure eruption has created aagination
Let your im run wild

A flaming cuwrinkles.

 Vegetation Regeneration Trail Tip of the 1986 Lava Flowthe eruption

Stripy lava?

stopped at
the base ofNow

the mountain.

 Path Around the Craterflow

The 360° ocean view gives you a perfect opportunity to see Mt. Fuji, Izu Peninsula, Izu Islands,Boso Peninsula, and Miura Peninsula.
Izu Oshima is a part of the Fuji-Hakone-Izu National Park is protected by the Natural Parks Law.
We hope you enjoy Izu Oshima while cherishing rich nature and scarce resources.

The rising white steam
water being
heated bymagma in Splashes of Magma

Special Protection
Zone in National ParkKozushima

NiijimaThis formation traveled down the lava
flow from the crater like a raft on a river.

the ground.

Magma escapes from thisUdonejima
Udo
dodonenejimanejejjiima
immam

Shikinejima
Sh kinShShikiinejikiejijma
ejejima(Uninhabited(U(UnUnUninhinnhabiababbiittedteeded island)
islanisand)
and)
and)

Toshima
ToTToso himoshimhimahii aOshima Onsen Hotel1986 fissure
eruption craters
LookoutGojinka Skyline

massivecrater Mt. Mihara Summit Pit Crater
During the 1986 eruption magma overflowedfrom the volcano, completely filling up the crater.

Omote-Sabaku Trail
About 50 min

About 40 min

MiharaShrine
Omote-Sabaku
DesertTexas Trail
About 60 min

TheFlowersof Izu Oshima

As the flowers bloom, the blackand green wilderness becomesgorgeous.

 Summit Trailk!
c Walimarr PanouoHOne

Trail to Oshima Onsen Hotel
About 60 min

Mt. Mihara
Summit Entrance
Geopark Exhibition at the Summit EntranceAingGrow utriaon
Rey nicajapo

Regeneration of life starts from pioneer
plants adapted to harsh environments.
Along this trail, you can take in the changing landscape as lava turns to forest ground.

Lava overflow fromis the result of

less than a day.

rtain!

create such

A bumpy lava

garden full of these strange rocks inFissures opened in the ground and spewed out lava.

flow out andthe eruption in 1986.

 Geo Rock Garden Fissure-Eruption Craters

Ura-Sabaku
DesertOshima Loop Road

Oshima Azalea

Path Around the Crater Mt.
Mt.
About 50 min
Kushigata
Mihara Mihara- Mt.

shinzan

Tsuki-to-sabaku Line

Mt.
ShiroishiThis map was created with the approval of the Geographical Survey
Institute using a 1/25,000 topographic map issued by the Institute.
The authorization number：平29情使、第419-GISMAP39996号

Special Protection
Zone in National ParkNo vehicles allowedLilium auratum var. platyphyllumaerAenilt
Coas The Great Road Cut
The layers of thishuge are the result of
about one hundredof eruption over
20, 000 years.

Buratto House(AgriculturalProducts Farm)

Sunset Palm Line

Okata
Portof Izu Oshima

Hinodehama
BeachCamellia japonica which is suitablefor well-drained land with warm,
heavy rain, has grown on the island
since the Jomon period.

OkatOata
at

giant layeredaekLi
cake

Se
Senzu

Oshima History andFolklore Museum

MotomachiPortKobohama
Beach

Hydrangea Rainbow LineUmi No Furusato
Mura (Lodge &Campgrounds)

OshimaGojinka Skyline
Town Office
Izu Oshima
Volcano Museum

Oshima Loop Road

Mt. Mihara
Summit Entrance

Camellia japonica
Throughout the year you can view
beautiful flowers peppering thecoastline with their vibrant colors.

Mt. Mihara

Tsuki-to-sabaku Line

Nomashma hi

 Fudeshima
The Great Road Cut

hill thafrom t rises
the seaSanohama 
BeachLilium maculatum

Habu
Habub
uminatomiminminato
naattonatoSashikiji
Sshhiikkijihi

Hot springs in Motomachi area
are the result of 1986 eruption.

 Motomachi Hamanoyu (Open Air Hot Spring)

Erupting near the coast, low-viscosity lava splash
piled up around, forming a hill.

ngThrilli seaside

Nature’s very own “pier”

Mr. Heiroku

Sedum oryzifolium

The best time to see Oshima's cherry blossoms depicting
the volcanic wilderness in beautiful pale white is in April.

 Habu Port (Explosion crater)
cliffs Cape Nagane

craterTurning aa port!
intoHabu Port

ToshikiCoastRelax with a Volcano

The islanders have found many uses
for the resilient camellia including
using them as windbreaks and for
creating charcoal and oil.

Oshima Park
Camellia Garden・Oshima Park Zoo

Tokyo metropolitan
Oshima Island
Branch Office

Travelingaround Izu
Oshima!

 Akappage (Red Hill)

Flowers

Oshima Airport

MotomacM
otom
tomachchi

A redThe

This map was created with the approval of the Geographical Survey
Institute using a 1/25,000 topographic map issued by the Institute.
The authorization number：平29情使、第419-GISMAP39996号

CapeChigasaki

The lava flow of the fissure

Originally a crater lake, a tsunami caused
the lake to connect to the ocean. In 1800,
Heiroku Akihiro expanded the connection, opening Habu Port.

wers of
Strange to cinder
layerederuption on the hillside went
down the stream and poured

Oshima cherry tree

into the sea, after which only theAhard lava remained as a cape.

lack beachb,tsof

 Imasaki
The large and small stones are seen on

Gray stripes oncliffs are old
traces (dykes) ofancient magmathat once pierced
Earth.

the surface of the cliff, which indicates

It is a black sandy beach that is made up of broken
lava and volcanic ash flowing through the swamp.

s Lodged
Boulder he Earthin t “Bomb Sags” of the Toshiki Coast
Stones that flew in the air due to intense eruptions left traces that crashed into the ground of
the deposited volcanic ash. (The cliffs have beeneroding and the rocks are collapsing.)

The giant cherry tree that survived the lava

 Kakihara Beach

field was once a landmark for voyage.

A lot of "volcanic beans stones" canbe found in the surrounding ground.

that the eruption was intense.

 Sanohama Beach Sakurakkabu Cherry Tree

The Volcanic Rem
ainsof Fudeshima Fudeshima
Years of waves have eroded this oldvolcano into the small island it is today.

at 800Estimatedyears old!
Izu Oshima Birth Story

Active Volcano

North American Plate

The eruption reprepeats
The Izu Islands are all
al volcanic
coislands. Volcanic columns
areformed along tthe trench,
Izu Oshima
and erup
eruptions are
Pacific Plate
reperepeated.
Izu-Ogasawara
JapanTrench

Eurasian Plate

Beginning about 1 millions years toabout 100,000 years ago, three
volcanoes existed in this chain.

hrougkai T
Philippine Sea PlateNanMantle

Tens of thousands of years ago, a newvolcano began to form on the ocean floor
and became active. This new volcano was
the beginnings of what would become
Izu Oshima.

The new volcano erupted
several times, covering
the remains of theoriginal three islands.
The new volcano erupted so manytimes that it completely absorbed
the original three volcanoes,
becoming one volcanic island.

Plate
Oceanic

Plate
Oceanic

Emergenceof Magma

Following countless eruptions,these volcanoes became dormant,
and were slowly eroded by the sea.

TrenchEmergenceof Magma

MantleThe history of Izu Oshimabegins with the story of old
volcanoes lined with the sea.

elatlPntaneentintl
CoMahtraegnivil!
ekrhtapeocene
Girae
imhExpsOat Izu

The 1986 Eruption
Erupp
November
21th, 1986

November
15th, 1986

The eruption
started at thesummit.

About 1700 years ago, amassive steam eruption
occurred at the summit.
A large amount of rock and soil
flowed down the island, and thepeak collapsed to form a caldera.

November
19th, 1986

The lava overflowed
into the caldera.

side of theA volcanic fissure formed on the northernrn base ofweste
norththedownlava
gspillinra,calde
rs frommete
200t
the mountain, and reaching abou-wideisland
anredtriggeion
private house. The erupth.
mont
entireanlastedthatevacuation

Life on the island is with "Gojinka".
While the volcano can cause disasters that threaten the calm, normal life of theisland. However, except during an erupting moment, gives the benefits that isindispensable to the living of the island. Long, long ago exploding magma would
create a red sky that the islanders called “Gojinka” which the people revered.

dThe Volcano's guar

Volcano observation equipment

All over Izu Oshima, the Japanese government and universities have installed more than 100 sensors such as seismographs, tiltmeters, and surveillance cameras. The Japanese
Meteorological Agency monitors these systems for volcanic
activity always. In the event that the sensors pick up anyactivity, residents will be notified by Disaster Prevention
and Administrative Radio System. Always remember, while
beautiful, Izu Oshima is still an active volcano. Always be prepared for any sort of volcanic activity that could occur. Pleasecheck the Japanese Meteorological Agency website for anyupdates on Izu Oshima’s volcanic activity.
Activity status of Izu Oshima volcano -JMA

The huge eruption that began in1777 created a new mountain in thecaldera 䉈 Mt. Mihara.
Since then, I have repeatedly repeated lava flows in
the caldera. The eruption outside the caldera thatoccurred in 1986 was the first in about 560 years.
Enjoy connecting to the earth at Izu Oshima Geopark!
Use all five senses to truly connect with Izu Oshima’ s wide variety ofnature. Witness the connection between people and place that makes
the island so special. We hope to share your unique Izu Oshima
experience with you and enjoy everything the island has to offer!
