United States, California, Riverside, NPSLittle San Bernardino Mountains; Hidden Tank Picnic Area, 1.4 mi. SW of paved road (Utah Trail) to Cottonwood Spr, approx. 8 mi. south of North Entrance Sta., N. end of Hexie Mtns.; Malapai Hill 7.5' Quad.
33.9605667 -116.01795 NAD83
1077 meters
3532ft.
Geologic formation: alluvium; Parent rock: granite; Soil type: gravel; among granitic boulders in gravelly soils.