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1985 Map of Mopah Peaks
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1985 Map of Mopah Peaks

USGS Topo · Published 1985

About this map

The Turtle Mountains dominate this high-desert landscape in eastern San Bernardino County, where dramatic volcanic topography meets the alluvial plains. This 1985 provisional study captures the area's geological complexity, centered on the distinctive Mopah Peaks and the prominent Castle Rock landmark to the south. The presence of Mopah Spring provides a rare point of historical water access in an otherwise arid environment characterized by extensive drainage systems like Gary Wash. The transition from the high peaks into the broad Vidal Valley reveals a classic Basin and Range terrain pattern, with the mountain front dropping sharply to the valley floor. Researchers and geologists can trace the intricate contouring of the range, which serves as a vital record of this protected wilderness area's natural state before late-twentieth-century shifts in land management.

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Map Details

Date Portrayed1985
Date Published1985
PublisherU.S. Geological Survey
Map TypeTopographic
Scale1:24,000
Physical Dimensions21.5 x 26.9 inches

Editions of this 1985 Mopah Peaks Map

This is the sole edition of this map. No revisions or reprints were ever made.

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Source Details

SourceU.S. Geological Survey
CopyrightPublic Domain