An official website of the United States government
Here's how you know
Official websites use .gov
A .gov website belongs to an official government organization in the United States.
Secure .gov websites use HTTPS
A lock () or https:// means you’ve safely connected to the .gov website. Share sensitive information only on official, secure websites.
This large boulder was used by Morton Elrod and other scientists as a baseline to measure the retreat of Grinnell Glacier’s terminus. It is now referred to as “Elrod’s Rock,” and the glacier’s terminus is no longer visible from this point.
Grinnell Glacier from Elrod's Rock and terminus 1926. Images that were acquired from the University of Montana may be protected by copyright. Permission may be required for use. View the image's collection record for more info and download options: http://content.lib.umt.edu/cdm/singleitem/collection/pharchives/id/3294… ID: 486.XII.114.037
Grinnell Glacier from Elrod's Rock and terminus 2008 in color.
Public domain
This large boulder was used by Morton Elrod and other scientists as a baseline to measure the retreat of Grinnell Glacier’s terminus. It is now referred to as “Elrod’s Rock,” and the glacier’s terminus is no longer visible from this point.
Grinnell Glacier from Elrod's Rock and terminus 1926. Images that were acquired from the University of Montana may be protected by copyright. Permission may be required for use. View the image's collection record for more info and download options: http://content.lib.umt.edu/cdm/singleitem/collection/pharchives/id/3294… ID: 486.XII.114.037