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1954 Map of Pilot Knob

Name: 1954 Topographic Map of Pilot Knob
Creator: U.S. Geological Survey
Published: 1964
License: https://creativecommons.org/publicdomain/mark/1.0/

USGS Topo · Published 1964

About this map

The high desert landscape of San Bernardino County is defined here by the intersection of early mining history and mid-century military operations. Much of the northern and eastern terrain is dominated by the Naval Reservation, a designation that overlays a network of older land uses and geological landmarks. Remnants of prospecting and pioneer life are evident at the Copper City (Site) and the P K Ranch, located near the base of prominent peaks like Pilot Knob and Granite Mtn.

Water remains the critical element of this arid region, as evidenced by the numerous named springs such as Lead Pipe Spring, Moonshine Spring, and Blue Chalcedony Spring. The geography shifts from the steep elevations of Eagle Crags and Robbers Mountain down into the broad, flat expanses of Grass Valley and Superior Valley. Surveyed in the 1950s, the map also captures smaller outposts and camps like Slocum Camp, offering a detailed view of the remote infrastructure that once supported exploration in the Mojave.