13/5/2025 (Tue)Start time -End time8:30~17:00
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Nature of Jigokudani

Wild life

Diverse organisms inhabit

Jigokudani is surrounded by precipitous cliffs, difficult to access. It has been known as a place of rich nature. Today, here is designated and preserved as part of the Joshinetsu-kogen national park and a game reserve.


In additions to creations introduced below, here is the habitat of various kinds of creations such as insects, fungi and algae.

Mammals

Japanese serow|Capricornis crispus

Japanese serow|Capricornis crispus

Jigokudani has many wildlife as well as monkeys. We can observe Japanese serow throughout the year. Also we see Japanese squirrel on the natural trail. It is rare that we see fox, Japanese raccoon, badger, marten and Japanese mink, because they are nocturnal. Flying squirrel and Pteromys momonga are also nocturnal and they come out very occasionally.


Hog and Japanese deer did not live here in the past though recently they are rapidly increasing the population. And, Asiatic black bear, hare, mouse and bat inhabit here.

 

 

Japanese serow
Capricornis crispus


A special natural treasure of Japan. They inhabit from montane to subalpine zone of Honshu (exclude Chugoku region), Shikoku and Kyushu. An endemic species of Japan. The length of body is 70-85cm, the height is 70-75cm, and the body weight is 30-45kg. It is smaller than Japanese deer and has pudgy body. Their limbs and neck are short and thick, the hair is short. Both male and female has black and sharpened horns, the length is about 15cm. They have bold suborbital glands under their eyes and they mark the territory with secretion from here.

Japanese Squirrel | Sciurus lis

Japanese Squirrel | Sciurus lis

Japanese hare | Lepus brachyurus

Japanese hare | Lepus brachyurus

Wild boar | Sus scrofa

Wild boar | Sus scrofa

Japanese weasel | Mustela itatsi

Japanese weasel | Mustela itatsi

Reptilians and Amphibians

There are no rare species inhabit though we see common reptiles inhabiting eastern Japan. We need attention to poisonous snakes such as Japanese mamushi and Tiger keelback. There are also Burrowing ratsnake and Japanese odd-tooth snake. No turtles here.


We see common amphibians inhabiting eastern Japan. Montane brown frog and Kajika frog are very common.

[*Poisonous]<br />Japanese copperhead | Gloydius blomhoffii

[*Poisonous]
Japanese copperhead | Gloydius blomhoffii

[*Poisonous]<br />Tiger keelback | Rhabdophis tigrinus

[*Poisonous]
Tiger keelback | Rhabdophis tigrinus

Japanese Rat Snakel | Japanese Rat Snake

Japanese Rat Snakel | Japanese Rat Snake

Japanese striped snakel | Elaphe quadrivirgata

Japanese striped snakel | Elaphe quadrivirgata

Japanese five-lined skink | Plestiodon japonicus

Japanese five-lined skink | Plestiodon japonicus

Montane Brown frog | Rana ornativentris

Montane Brown frog | Rana ornativentris

Birds

There are no rare species inhabit though we see common birds inhabiting eastern Japan. Eastern turtle cove comes to get the leftover food of monkeys’. In winter season, Accentor comes from the alpine for overwintering and goes back when spring comes.


You can enjoy bird watching throughout the year.

Oriental Turtle-Dove | Streptopelia orientalis

Oriental Turtle-Dove | Streptopelia orientalis

Alpine accentor | Prunella collaris

Alpine accentor | Prunella collaris

Winter Wren | Troglodytes

Winter Wren | Troglodytes

Meadow Bunting | Emberiza cioides

Meadow Bunting | Emberiza cioides

Great Tit | parus major

Great Tit | parus major

Blue-and-white Flycatcher | Cyanoptila cyanomelana

Blue-and-white Flycatcher | Cyanoptila cyanomelana

Plants

Both side of the trail leading to the Jigokudani from the Kanbayashi-onsen is in the grove of planted cedar and larch. It has not been cared for long time, grass and shrubs flourish and it forms a secondary nature.


There are no rare plants but we can enjoy the different views of common plants native in eastern Japan from season to season.


In the upriver of the Jigokudani, there are undeveloped wooded area and natural groves of beech tree, Japanese oak, zelkova and alnus firma.

Adonis amurensis

Adonis amurensis

Viola grypoceras

Viola grypoceras

Chloranthus japonicus

Chloranthus japonicus

Arisaema urashima

Arisaema urashima

Padus grayana

Padus grayana

Hydrangea

Hydrangea

Schizophragma hydrangeoides

Schizophragma hydrangeoides

Deutzia crenata

Deutzia crenata

Impatiens noli-tangere

Impatiens noli-tangere

A tree covered with ice

A tree covered with ice

See another article of Nature of Jigokudani

Four seasons in JigokudaniFour seasons in Jigokudani
Wild lifeWild life
Hot spring of JIGOKUDANIHot spring of JIGOKUDANI
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