Bear Wallow Butte, the forested peak at the right, was the source of the youthful-looking unvegetated lava flows seen at the left-center. Bear Wallow Butte lies at the southern end of a N-S-trending chain of vents known as Tumble Buttes. Snow-capped Lassen Peak is visible to the south just beyond the summit of Bear Wallow Butte.

Photo by Lee Siebert, 1998 (Smithsonian Institution).

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

Tumble Buttes