Boulder Ice Cave Glacier 1932 and 1988

By Northern Rocky Mountain Science Center 1988 (approx.)

Boulder Ice Cave Glacier 1932 and 1988

Original Thumbnail Medium

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.