Boulder Ice Cave Glacier 1932 and 1988
By Northern Rocky Mountain Science Center
1988 (approx.)
![Boulder Ice Cave Glacier 1932 and 1988](https://d9-wret.s3.us-west-2.amazonaws.com/assets/palladium/production/s3fs-public/styles/full_width/public/thumbnails/image/8_Boulder_ice%20cave.jpg?itok=qjFQiB3r)
Detailed Description
Boulder Glacier Ice Cave: 1932, TJ Hileman, GNP Archives – 1988, J DeSanto, U of M Library
This photo pair inspired the USGS to document glacier and landscape change using oblique photography.
View the full collection at USGS Photographic Library
Sources/Usage
Public Domain.