Hokkaido Koma-ga-take
Andesitic stratovolcano on the island of Hokkaido
From Wikipedia, the free encyclopedia
Hokkaidō Koma-ga-take (北海道駒ヶ岳, Hokkaidō Koma-ga-take), also Oshima Koma-ga-take (渡島駒ヶ岳), Oshima Fuji (渡島富士), or just Koma-ga-take (駒ヶ岳) is a 1,131 metres (3,711 ft) andesitic stratovolcano[1] on the border between Mori, Shikabe, and Nanae, all within the Oshima Subprefecture of Hokkaidō, Japan.
| Mount Hokkaidō-Komagatake | |
|---|---|
| 北海道駒ヶ岳 | |
 View from Lake Ōnuma (January 2026) | |
| Highest point | |
| Elevation | 1,131 m (3,711 ft) |
| Listing | List of mountains and hills of Japan by height List of volcanoes in Japan |
| Coordinates | 42°03′48″N 140°40′38″E |
| Naming | |
Language of name | Japanese |
| Geography | |
  Mount Hokkaidō-Komagatake Location within Hokkaido | |
| Location | Hokkaidō, Japan |
| Topo map(s) | Geographical Survey Institute 25000:1 駒ヶ岳 50000:1 室蘭 |
| Geology | |
| Rock age | Quaternary |
| stratovolcano | |
| Volcanic arc | Northeastern Japan Arc |
| Last eruption | September to November 2000 |
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.[2] The 1640 eruption had an estimated volume of 2.9 km3 (0.70 mi3) with a dense-rock equivalent of 1.1 km3 (0.26 mi3). It also contained a debris avalanche which caused a tsunami, resulting in over 700 deaths.[3] Runup heights of >8 m (26 ft) were recorded.[4] Since then, there have been at least 50 recorded volcanic events at Mount Koma-ga-take.[5]
Relief Map
Viewed from NW.
Viewed from ESE.
