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North Cascades National Park Geology: A Mountain Mosaic
Three virtual field trips, taking viewers along the North Cascade Highway from the town of Concrete in Washington state to the Washington Pass Overlook, to Baker River Road and Schriebers Meadows, and along the North Fork of the Nooksack River. Includes maps and photographs. Also features information about the minerals, rocks, and other geologic features of the region. From the U.S. Geological Survey.
http://geomaps.wr.usgs.gov/parks/noca/

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