The crater was formed as a result of the largest Holocene eruption KHG about 6900 years BP. It is 2.1 x 2.8 km large and is filled with the lake 150 m deep; the upper part of an inter-crater dacite extrusive dome(s) forms three small closely spaced islands.
Author(s): Nikolai Smelov, IVS FEB RAS
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