"The Niseko volcano group in SW Hokkaido, WNW of Yotei volcano, contains a cluster of andesitic stratovolcanoes and lava domes. The volcanic complex is located NW of Niseko City. The latest dated activity at the Niseko group was a phreatic to magmatic eruption about 7000 years ago. Fumarolic areas and hot springs are found at various locations in the Niseko volcano group."  -Smithsonian Volcano Archive
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