The 2.5-km (1.5 mi)-diameter, lake-filled caldera of Kaguyak volcano truncates a former stratovolcano. Postcaldera lava domes form a prominent peninsula (right center) and a small island. Photograph by C. Nye, Alaska Division of Geological and Geophysical Surveys, August, 1982.
Image courtesy of AVO / Alaska Division of Geological & Geophysical Surveys.