Black Buttes is a group of overlapping lava domes on the lower western flank of Mount Shasta that formed during the early Holocene, around the same time as the formation of Shastina on the upper west flank. Block-and-ash flows accompanying dome growth traveled over 10 km S. The notches on the western flank (left) mark the tops of several individual domes.

Photo by Lee Siebert, 1981 (Smithsonian Institution).

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

Galleries: Lava Domes

Keywords: lava dome

Shasta