Bolshoi Semiachik massif |
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Part of the Central Semiachik thermal field at the foreground. Holocene extrusive domes, Ivanov (right) and Korona ("Crown"; left) are at the background. Early Holocene Ivanov dome has no lava flow and looks like a real well-shaped dome. Mid-Holocene Korona dome gave rise to a long lava flow and associated lahars.
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