Geology of North Cascades National Park:
Virtual Field Trips
Three separate field trips take you (1) along the scenic North Cascade Highway (State Route 20), (2) up the Baker Lake road, and (3) along the Mount Baker Highway (State Route 542). 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. Are you ready to hit the road?
Field trip 1; Highway 20 and vicinity
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.
Material in this site has been adapted from a book,
Geology of the North Cascades: A Mountain Mosaic by R. Tabor
and R. Haugerud, of the USGS, with drawings by Anne Crowder. It is published
by The Mountaineers, Seattle.