BackgroundKita-Yatsuga-take (North Yatsuga-take) is a group of stratovolcanoes and lava domes at the NW end of the NNW-SSE-trending Yatsuga-take volcanic massif. The basaltic-to-dacitic Kita Yatsuga-take volcanic group contains the Tateshina, Yoko-dake, Shimagare-yama, Chausu-yama and Futago-mine volcanoes. Tateshina-yama is sometimes known as Suwa Fuji because of its conical profile. A large lava flow forms the Tateshina-kogen plateau south of Tateshina and Yoko-dake volcanoes. A debris avalanche from edifice collapse in 888 AD created Matsubara Lake on the east side of the massif. Yoko-dake lava dome, capped by eight small craters, has been active into the Holocene. The most recent eruption took place about 800 years ago, when ash emission accompanied emplacement of a small lava flow.
(from: Smithsonian / GVP volcano information)
See also: Sentinel hub | Landsat 8