Nigorigawa Caldera (

Japanese Japanese may refer to: * Something from or related to Japan, an island country in East Asia * Japanese language, spoken mainly in Japan * Japanese people, the ethnic group that identifies with Japan through ancestry or culture ** Japanese diaspor ...

: 濁川カルデラ, ''Nigorigawa karudera'') is a

volcanic crater A volcanic crater is an approximately circular depression in the ground caused by volcanic activity. It is typically a bowl-shaped feature containing one or more vents. During volcanic eruptions, molten magma and volcanic gases rise from an und ...

in Oshima,

Hokkaido is Japan's second largest island and comprises the largest and northernmost prefecture, making up its own region. The Tsugaru Strait separates Hokkaidō from Honshu; the two islands are connected by the undersea railway Seikan Tunnel. The lar ...

, Japan. It has an elevation of 1,168 ft (356m) and it last erupted 12,000 years ago. The caldera has a diameter of 3km. A town of the same name is located at the caldera. East of Nigorigawa is the town of

Mori Mori is a Japanese and Italian surname, and also a Persian pet name for Morteza. It is also the name of two clans in Japan, and one clan in India. Italian surname *Barbara Mori, Uruguayan-Mexican actress * Camilo Mori, Chilean painter * Cesare ...

and an active volcano known as Koma-ga-take.

References

{{Hokkaido-geo-stub Calderas of Hokkaido Volcanoes of Hokkaido Volcanic craters Pleistocene calderas