Aerial view, looking southeast, at the summit of Redoubt Volcano. Prior to the onset of the 1989 to 1990 eruptions of Redoubt Volcano, melting of the summit crater ice cap caused by heat from rising magma produced a vigorous steam plume. Photograph by H. Twitchell, National Park Service, December 14, 1989.
Image courtesy of the photographer and the National Park Service.