Glacial erratic near the Grand Canyon of the Yellowstone in Yellowstone National
![image related to volcanoes. See description](https://d9-wret.s3.us-west-2.amazonaws.com/assets/palladium/production/s3fs-public/styles/full_width/public/img7540.jpg?itok=CIb3zPPn)
Detailed Description
This huge boulder was dropped by a retreating glacier on the north rim of the Grand Canyon of the Yellowstone in Yellowstone National Park, and it is a testament to Yellowstone's icy past.
Sources/Usage
Public Domain.