, also , , or just is a 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 in 1640. The 1640 eruption had an estimated volume of with a dense-rock equivalent of . It also contained a debris avalanche which caused a tsunami, resulting in over 700 deaths. Runup heights of > were recorded. Since then, there have been at least 50 recorded volcanic events at Mount Koma-ga-take.神沼克伊,小山悦郎 日本の火山を科学する　日本列島津々浦々、あなたの身近にある108の活火山とは？ ソフトバンククリエイティブ 2011. .

See also Komagatake

References

Geographical Survey Institute Teikoku's Complete Atlas of Japan, Teikoku Shoin Co., Ltd., Tokyo 1990,

External links

Hokkaido-Komagatake - Japan Meteorological Agency - Japan Meteorological Agency Hokkaido-Komagatake Volcano - Geological Survey of Japan Hokkaido-Komagatake - Smithsonian Institution: Global Volcanism Program