Global Volcanism Program | Image GVP-05375
Akutan forms the west-central part of Akutan Island in the eastern Aleutians. The summit contains a 2-km-wide caldera with a large scoria cone, visible here through a low point in the north caldera rim. The cone has been the site of frequent historical eruptive activity.
Photo courtesy of U.S. Geological Survey, Alaska Volcano Observatory.