Lahars from Mount St. Helens carried this large boulder downstream ...
![Lahars from Mount St. Helens carried this large boulder downstream ...](https://d9-wret.s3.us-west-2.amazonaws.com/assets/palladium/production/s3fs-public/styles/full_width/public/vhp_img1107.jpg?itok=mcQ3NcID)
Detailed Description
Lahars from Mount St. Helens carried this large boulder downstream as it ripped down trees and left a thick mud flow deposit after the May 18, 1980 eruption. Muddy River, Washington.
Sources/Usage
Public Domain.