Despite its youthful appearance, the Devils Homestead lava flow in the foreground is slightly more than 10,000 years old. Erosional modification of lava flow surfaces proceeds slowly in arid regions. The Devils Homestead flow is one of the largest on the north flank of Medicine Lake volcano, the broad shield volcano on the horizon. Flank cinder cones dot the slopes of the chemically diverse shield volcano, which has produced both the basaltic cinder cones and lava flows seen here, and dacitic and rhyolitic pumice and lava flows.

Photo by Lee Siebert, 1998 (Smithsonian Institution).

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

Medicine Lake