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

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