The Belknap Crater scoria cone provides a panorama of recent volcanism in the McKenzie Pass area. Younger lava flows from scoria cones on the north flanks of North and Middle Sister volcanoes in the background merge with flows from the Belknap shield volcano. Most of these flows were erupted in the past few thousand years. In the left foreground, lava flows from Belknap diverge around kipukas, islands of older rocks.

Photo by Lee Siebert, 1982 (Smithsonian Institution).

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

Keywords: scoria cone | stratovolcano | lava flow

Three Sisters