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).

This image is made available under the Public Domain Dedication CC0 license, but proper attribution is appreciated.

Medicine Lake