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1931 Map of Redrock Mtn

Name: 1931 Topographic Map of Redrock Mtn
Creator: U.S. Geological Survey
Published: 1931
License: https://creativecommons.org/publicdomain/mark/1.0/

USGS Topo · Published 1931

About this map

The Angeles National Forest dominates this 1931 survey, revealing a landscape defined by rugged canyons and early forestry infrastructure. This era of forest management is highlighted by the presence of a Shelter House and a prominently marked Firebreak cutting across the terrain. Human activity in the backcountry is evidenced by the Old Gillette Mine and the Kelly Ranch, while the Emergency Airplane Landing Field underscores the transition into the aviation age for mountain patrolling and rescue operations.

Water sources such as Atmore Meadows and Castaic Creek are central to the geography, providing vital points of reference in the complex drainage systems of Bear Canyon and Cienega Canyon. Along the periphery, the National Forest Inn serves as a gateway to the mountains, marking the intersection of early tourism and wilderness preservation. This sheet offers a clear view of the canyon-and-ridge topography before mid-century developments altered the character of the Los Angeles backcountry.