Logan Glacier, 2005
By Northern Rocky Mountain Science Center
July 2005 (approx.)
![Logan Glacier, 2005](https://d9-wret.s3.us-west-2.amazonaws.com/assets/palladium/production/s3fs-public/styles/full_width/public/thumbnails/image/Glacial%20Moraines.jpg?itok=u25ZsrJQ)
Detailed Description
Glacial moraines, the rocky debris piles left when glaciers retreat, allow scientists to estimate the size of glaciers at end of the Little Ice Age.
Sources/Usage
Public Domain.