Greater Yellowstone Ecosystem
http://biology.usgs.gov/s+t/noframe/r114.htm

U.S. Geological Survey


This U.S. Geological Survey website uses remotely sensed data to analyze landscape change in the Greater Yellowstone Area. It features maps and satellite images that show the geographical extent of the area, its management, land cover, and land use.

This resource is referenced here:
Subject: Biology, Geoscience:Geology
Resource Type: Audio/Visual:Images/Illustrations, Maps
Data Derived: Data Derived
Focus on Yellowstone: Policy and management