Global Volcanism Program | Image GVP-04548
This view from the NE in June 1986 shows steam rising from the summit crater of Korovin, north of Atka. It has been reported to have a cylindrical vent of greatly variable depth depending on the presence of a lake.
Photo by Harold Wilson (Peninsula Airways), 1986 (courtesy of John Reeder, Alaska Div. Geology & Geophysical Surveys).