Teachers take a guided walk on the Hummocks Trail at Mount St. Helens

Detailed Description
Teachers take a guided walk on the Hummocks Trail, learning about the depositional features of the May 18, 1980 eruption.
Sources/Usage
Public Domain.
Teachers take a guided walk on the Hummocks Trail, learning about the depositional features of the May 18, 1980 eruption.
Public Domain.