Komagatake

Hokkaidō Koma-ga-take, also Oshima Koma-ga-take, Oshima Fuji, or just Koma-ga-take is a 1,131 metres andesitic stratovolcano on the border between Mori, Shikabe, and Nanae, all within the Oshima Subprefecture of Hokkaidō, Japan.

Occurrence of volcanic activity started some 30,000 years ago. Following roughly 5,000 years of dormancy, volcanic activity at Mount Koma-ga-take restarted at the start of the 17th century, triggering the Kan'ei Great Famine in 1640. Since then, there have been at least 50 recorded volcanic events at Mount Koma-ga-take.