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1956 Map of Sonora Pass

Name: 1956 Topographic Map of Sonora Pass
Creator: U.S. Geological Survey
Published: 1961
License: https://creativecommons.org/publicdomain/mark/1.0/

USGS Topo · Published 1961

About this map

Sonora Pass serves as the high-altitude centerpiece of this mid-century survey, marking the dramatic boundary between the Stanislaus National Forest and the Toiyabe National Forest. The landscape is defined by the sharp divide of the Sierra crest, where Leavitt Peak and Sonora Peak tower over a network of alpine basins. To the east, the West Walker River carves through high meadows, supporting a specialized mountain economy and military presence.

Evidence of seasonal habitation and early transport is visible at Leavitt Sta (Site) and the Connels Cow Camp, illustrating the era's reliance on these high-country outposts. The presence of the Marine Corps Cold Weather Camp at Pickel Meadow highlights the strategic use of this high-elevation terrain during the 1950s. Numerous glacial features, from the deep waters of Sardine Lake to the cascades of Leavitt Falls, document a complex hydrological system draining both sides of the Great Basin divide.