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1956 Map of Cajon

Name: 1956 Topographic Map of Cajon
Creator: U.S. Geological Survey
Published: 1975
License: https://creativecommons.org/publicdomain/mark/1.0/

USGS Topo · Published 1975

About this map

The Cajon Pass serves as the critical gateway through the mountains in this mid-century topographic survey, where the infrastructure of the San Bernardino National Forest meets a complex network of rail and road. The map documents the concentrated transit corridor of the Atchison Topeka and Santa Fe, Southern Pacific, and Union Pacific railroads as they navigate the steep grades near Summit. Small settlements and waypoints like Alray, Cajon, and Keenbrook are nestled along the tracks and Cajon Creek, highlighting the area's importance to California's transportation history.

Away from the main rails, the landscape is defined by deep canyons and high points such as Cajon Mountain and the Cleghorn Ridge. Local life is visible in the placement of the Little Horsethief Ranch, the Applewhite Campground, and the Cajon Mountain Lookout. The geological significance of the region is anchored by the Lone Pine Canyon, which follows the San Andreas Fault trace, and the unusual natural feature of Lost Lake sitting near the head of the canyon.