Lahar (dark deposit on the snow) originating in the Mount St. Helen...

Lahar originating in the Mount St. Helens crater after an explosive...

Detailed Description

The lahar flowed from the crater into the North Fork Toutle River valley and eventually reached the Cowlitz River 80 km (50 mi) downstream. The lahar also entered Spirit Lake, which can be seen in the lower left corner.


Image Dimensions: 3072 x 2048

Date Taken: