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1969 Map of Mariposa Peak

Name: 1969 Topographic Map of Mariposa Peak
Creator: U.S. Geological Survey
Published: 1982
License: https://creativecommons.org/publicdomain/mark/1.0/

USGS Topo · Published 1982

About this map

The high ridges of the Diablo Range dominate this landscape at the intersection of Merced, San Benito, and Santa Clara counties. Industrial activity is concentrated in the western highlands, marked by the Stayton Mine, Ambrose Mine, and Mariposa Mine near the summit of Mariposa Peak. These sites, along with a Quarry and Gravel Pit, speak to the mineral extraction history of the region. The map reveals a network of water sources, from the San Luis Reservoir in the northeast to numerous isolated points labeled Spring, which were vital for the remote livestock operations at Frenchs Ranch and Pfeiffer Ranch.

Access to this terrain was limited to a complex web of Jeep Trails and the Lone Tree Road, which navigate around prominent elevations like Antimony Peak and Henrietta Peak. The expansive Santa Ana Y Quien Sabe land grant area and the Quien Sabe Valley underscore the historical ranching patterns of the central Coast Ranges. In the east, the San Luis Reservoir State Recreation Area provides a contrast of modern land management against the older cattle-grazing territory defined by Peckham Ridge.