USGS Topographers at Work
![Image: USGS Topographers at Work](https://d9-wret.s3.us-west-2.amazonaws.com/assets/palladium/production/s3fs-public/styles/full_width/public/FG048-300.jpg?itok=QitkS7nH)
Detailed Description
USGS topographers doing a helicopter photo reconnaissance in Saline Valley in Death Valley, California.
Sources/Usage
Public Domain.
USGS topographers doing a helicopter photo reconnaissance in Saline Valley in Death Valley, California.
Public Domain.