Lava Tube Caves, Flagstaff AZ (Image Credit Thomas H. Prettyman)
By Astrogeology Science Center
2018 (approx.)
![Lava Tube Caves, Flagstaff AZ (Image Credit Thomas H. Prettyman)](https://d9-wret.s3.us-west-2.amazonaws.com/assets/palladium/production/s3fs-public/styles/full_width/public/thumbnails/image/962d5c6dfb1afc487f28b9b9f13ee5b3_lavarivercave1.jpg?itok=4tnfvZMn)
Detailed Description
Lava Tube Caves, Flagstaff AZ (Image Credit Thomas H. Prettyman).
Sources/Usage
Public Domain.