The In-Ko-Pah Mountains consist of faulted granitic intrusive bedrock, weathered into dramatic piles of residual boulders. The local
granodiorite is naturally a very light color, weathering over centuries into a reddish-orange
desert varnish. Visitors can view these landforms while driving
Interstate 8 through
Devil's Canyon heading west and
In-Ko-Pah Gorge heading east. Remnants of
Highway 80, the first North American transcontinental highway, can be seen on either side. The boulders can be examined closer at the
Desert View Tower, a historic roadside structure, that includes a boulder park with a number of massive Depression-era sculptures carved in the local rocks. Camping among the rocks is available in the McCain Valley Recreational Area, located off Interstate 8 near the town of
Boulevard. ==See also==