Global Volcanism Program | Image GVP-06581
Medicine Lake, a popular camping and recreation destination in northern California, is a small 2-km-long lake that occupies the SW side of Medicine Lake caldera. The forested southern rim of the 7 x 11 km caldera forms the horizon. Medicine Lake volcano is known for its young obsidian flows within the caldera and on its flanks.
Photo by Lee Siebert, 1988 (Smithsonian Institution).