^{Country & Prefecture}

Japan, Hokkaidō

^{Volcano Types}

Submarine, Caldera

^{Tectonic Setting}

Subduction zone

Continental crust (> 25 km)

^Summit

-30 m

^{Latitude, Longitude}

41.737°N, 140.855°E

^{Last Known Eruption}

Pleistocene
(〜 2.58 million to 11,700 years ago)