The back side of light-colored Paint Pot Crater and Pumice Stone Mountain, from where the photo was taken, are mantled by white pumice from the eruption that preceded the extrusion of the nearby Little Glass Mountain obsidian flow. The formation of Paint Pot Crater and the associated extrusion of the lava flow that forms the sparsely vegetated area south (right) of the cone occurred about 1100-1150 years ago, only shortly before the major Little Glass Mountain eruption.

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