View from NE of a small phreatic eruption on Mount St. Helens befor...
![View from the northeast of a small phreatic eruption on Mount St. H...](https://d9-wret.s3.us-west-2.amazonaws.com/assets/palladium/production/s3fs-public/styles/full_width/public/vhp_img585.jpg?itok=MPv4yo-F)
Detailed Description
On March 20, 1980, after a quiet period of 123 years, earthquake activity once again began under Mount St. Helens volcano. Seven days later, on March 27, small phreatic (steam) explosions began.
Sources/Usage
Public Domain.