The many small Quaternary volcanic centers located between Lassen Peak and Medicine Lake volcanoes in northern California include Big Cave, a small low shield volcano seen on the horizon just right of center. Forests blanket a series of basaltic lava flows erupted from the summit of the inconspicuous shield volcano. The prominent peak at the left is Bald Mountain, seen here from the NE.

Photo by Lee Siebert, 1998 (Smithsonian Institution).

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

Twin Buttes