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2015 Map of Cajon

Name: 2015 Topographic Map of Cajon
Creator: U.S. Geological Survey
Published: 2015
License: https://creativecommons.org/publicdomain/mark/1.0/

USGS Topo · Published 2015

About this map

The San Andreas Fault cuts a diagonal path through this southern California landscape, defining the geological boundary where the San Gabriel Mountains and the San Bernardino Mountains meet. This survey documents the critical transportation corridor of the Cajon Pass, a vital link between the Antelope Valley and the San Bernardino basin. The map tracks the transition from the high desert residential grid of Hesperia at the northern edge to the steep, canyon-riven terrain of the San Bernardino National Forest.

Smaller settlements and stopovers like Cajon Junction, Keenbrook, and Cosy Dell line the major travel routes through the mountains. Significant natural features include the W Fork Mojave River, the secluded Lost Lake, and numerous deep drainages such as Horsethief Canyon and Lone Pine Canyon. The map provides a clear look at the infrastructure required to navigate this complex topography, from the modern highway interchanges to the older pathways that follow the natural contours of the pass.