Global Volcanism Program | Image GVP-10102
Snow and ice cover the surface of the lake filling Kaguyak caldera in this view from the NW. The caldera formed during a voluminous eruption about 5,800 years ago that produced pyroclastic flows that reached Shelikof Strait. Two lava domes, one large and the other just sticking above the center of the lake were built after the caldera-forming eruption, following the development of a shallow lake.
Photo by Tom Miller, 1998 (Alaska Volcano Observatory, U.S. Geological Survey).