The large partially forested lava flow in the foreground originated from West Crater, out of view to the right, about 8,000 years ago. The blocky andesite flow traveled about 4.5 km to the SE, seen here about 2 km from the vent. In addition to this eastern flow, another lava flow traveled to the NW down the Hackamore Creek drainage. West Crater is a lava dome with a 200-m-wide summit crater and is on a topographic divide in southern Gifford Pinchot National Forest.

Photo by Lee Siebert, 2002 (Smithsonian Institution).

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

Keywords: lava flow

West Crater