The Atka, Korovin, Kliuchef Volcanic Complex, Aleutians, Alaska

Greater Atka Volcano complex with the caldera, Korovin and Kliuchef labeled. Image courtesy Lu and Dzurisin, 2014, via Smithsonian GVP

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Ushishur, Kuril Islands, Russia

Airborne photo of Ushishur volcano, Yankich Island, central Kurils. Caldera is clearly visible with 4 post-caldera domes. Photo taken looking generally N. External hydrothermal plume visible to the E at the 0300 position. Neighboring Reponkich Island visible to the NE. Image courtesy Eugene Kaspersky on Twitter, Oct 2019