USGS and PHIVOLCS scientists loading volcano monitoring gear.
By Communications and Publishing
May 1991 (approx.)
![scientists loading gear into helicopter](https://d9-wret.s3.us-west-2.amazonaws.com/assets/palladium/production/s3fs-public/styles/full_width/public/thumbnails/image/packingheli_0.jpg?itok=OOq7mMEy)
Detailed Description
USGS and PHIVOLCS scientists loading volcano monitoring gear into U.S. Air Force helicopter.
Sources/Usage
Public Domain.