The Atka, Korovin, Kliuchef Volcanic Complex, Aleutians, Alaska Posted by agimarc on 2022-02-15 Posted in: America N, Volcanoes. Tagged: Aleutians, Andreanof, Atka, Caldera, Dacite, Kliuchef, Korovin, Sarychef. Leave a comment Greater Atka Volcano complex with the caldera, Korovin and Kliuchef labeled. Image courtesy Lu and Dzurisin, 2014, via Smithsonian GVP Continue ReadingAdvertisement