NPS inspects Plate Boundary Observatory strainmeter/seismometer
![National Park Service employee inspects a Plate Boundary Observator...](https://d9-wret.s3.us-west-2.amazonaws.com/assets/palladium/production/s3fs-public/styles/full_width/public/vhp_img132.jpg?itok=0C9Ucmjx)
Detailed Description
National Park Service employee inspects a Plate Boundary Observatory strainmeter/seismometer station.
Sources/Usage
Public Domain.
National Park Service employee inspects a Plate Boundary Observatory strainmeter/seismometer station.
Public Domain.