North Cascades National Park Geology Virtual Field Trips Click on image to see detailed maps.
Most of the sites you'll see are right off the highway, but we've included a few side trips that take you off the beaten path. Click on one of the three fieldtrip maps shown to see a detailed map. Navigate by returning to this page or by using the clickable map link at the top of each field trip stop page. This field trip begins west of North Cascades National Park at the town of Concrete near Lake Shannon and winds through the Ross Lake National Recreation area along Highway 20 to Washinton Pass. This field trip takes you from Concrete up the Burpee Hill Road to the Baker River Road and on to Schriebers Meadows south of Mount Baker.