Ash from Mount St. Helens eruption on May 18, 1980 collected 39 km ...

By Volcano Hazards Program 1905 (approx.)

Ash from Mount St. Helens eruption on May 18, 1980 collected 39 km ...

Original Thumbnail Medium

Detailed Description

Ash from Mount St. Helens eruption on May 18, 1980 collected 39 km (24 mi) downwind, in Randle, Washington.

Sources/Usage

Public Domain.