Devil Peak (5882')

South of Las Vegas, NV

H.W. Stockman
March 6, 2004

From the southern intersection of 215 and i15 in Las Vegas, take i15 south, for ~22.2 miles (Jean exit for 161). Take the off-ramp at Jean. From the intersection of the off-ramp and rte. 161, turn left (SE) and travel ~0.4 miles. Then turn right, and take rte. 604 for 5.06 miles SSW, until a gravel road turns sharp right UNDER i15. Continue under i15, and take the gravel road 4.1 miles (mainly WSW to SW) to the parking spot at the mouth of the canyon. The hike begins from here, first going west (on an old road) by the old perlite mine, then ascending up the ridge WNW to the summit.

This is a cool weather hike; go only when the Las Vegas daytime temperatures won't exceed 80F. The shattered rhyolite makes for steep, nasty talus and poor footing; a petty price for geological uniqueness. It's a short hike, but good quadriceps exercise. There is no trail.

Devil Peak is unique for this area; it is actually a rhyolite dome/intrusion into a terrain dominated by limestones. The mine at the SW foot of the peak represents where the rhyolites were blown into cracks in the limestones, quenching the magma as obsidian glass. Native Americans used obsidian from this area for arrowheads. Much of the obsidian gradually hydrated, perhaps over millions of years, to form perlite. The perlite, when heated, melts then exsolves the water, puffing up to form a light material for insulation, concrete additives or potting soil.


View SE at limestone ridge and perlite mine.






View ~SW to Clark Mt. in California.



Looking N to Charleston Peak.







Alda and Pierre take a break for lunch.





Cerebellum check.



Should we believe the elevation on the benchmark, or the recent USGS re-survey?





View ~S to Ivanpah "Lake"..



A band of perlite blown into the edge of the mine.






Nobody is home.