Angle and distance measurements to Mount St. Helens' flanks were ta...
![Angle and distance measurements to the Mount St. Helens' flanks wer...](https://d9-wret.s3.us-west-2.amazonaws.com/assets/palladium/production/s3fs-public/styles/full_width/public/vhp_img552.jpg?itok=I1e9q3cT)
Detailed Description
Angle and distance measurements to the Mount St. Helens' flanks were taken periodically to monitor for deformation similar to the 1980 bulge. Station northeast of volcano.
Sources/Usage
Public Domain.