Global Volcanism Program | Image GVP-06617
Sparsely vegetated andesitic lava flows issued from South Twin Butte, the tree-covered cinder cone in the background. The two Twin Butte cinder cones and associated lava flows are part of a broad area of little-known youthful Quaternary volcanic features north of Lassen Volcanic National Park.
Photo by Lee Siebert, 1998 (Smithsonian Institution).
This image is made available under the Public Domain Dedication CC0 license, but proper attribution is appreciated.