Location Honshū, Japan Volcanic arc/belt Northeastern Japan Arc Elevation 2,480 m Age of rock Quaternary | Mountain type Volcanic Last eruption 1200 ±100 years Prominence 400 m Parent peak Mount Tateshina | |
Topo map Geographical Survey Institute 25000:1 蓼科山,
25000:1 蓼科,
50000:1 蓼科山 Mountain range Northern Yatsugatake Volcanic Group Parent range Northern Yatsugatake Volcanic Group Similar Mount Nyū, Mount Tateshina, Mount Kuro, Mount Hakuun, Mount Hokuchin | ||
Mount Yoko (横岳, Yoko-dake) also Mount Kita Yoko, is an active lava dome located in the Northern Yatsugatake Volcanic Group of the Yatsugatake Mountains, Honshū, Japan. Mount Yoko has shown the most recent activity and is now considered an active volcano. It last erupted about 800 years ago. The eruption consisted of ash with a lava flow of some 3 million cubic meters. The eruption was dated by corrected radiocarbon dating. The next previous eruption was in or after 400 BCE.
References
Mount Yoko (Northern Yatsugatake) Wikipedia(Text) CC BY-SA