US Geological Survey
U.s. Geological Survey: Geology of the National Parks
Access, from one index page, to three-dimensional photographs of all U.S. national parks. Standard photographic images and tours and selected geological resources (e.g., stratigraphic maps) for each park can also be linked to from this...
US Geological Survey
U.s. Geological Survey: Rocks and Minerals
Essential guide to geology of the National Parks focuses on minerals and the different types of rocks. Includes a visual glossary.
Curated OER
National Park Service: Tour of Park Geology: River Systems
Learn about the rivers that are found in the National Parks on this site.