Global Volcanism Program | Image GVP-03037

Sahalie Falls formed when lava flows erupted about 3,000 years ago from the Sand Mountain volcanic field traveled to the west, blocking the channel of the ancestral McKenzie River. Photo by Lee Siebert, 1995 (Smithsonian Institution).

Sahalie Falls formed when lava flows erupted about 3,000 years ago from the Sand Mountain volcanic field traveled to the west, blocking the channel of the ancestral McKenzie River.

Photo by Lee Siebert, 1995 (Smithsonian Institution).

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

Keywords: environmental impact

Sand Mountain Field