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2015 Map of Cobblestone Mountain

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

USGS Topo · Published 2015

About this map

Cobblestone Mtn and White Mtn dominate this high-altitude landscape along the border of the Los Padres National Forest and Angeles National Forest. The topography is defined by sharp elevation changes, where drainage systems like Piru Cr and Aqua Blanca Cr have carved deep geographical features such as the Big Narrows and Devils Gateway. The map reveals a complex network of canyons, including Hopper Canyon, Reasoner Canyon, and Canton Canyon, which dictate the natural movement through this part of the Transverse Ranges.

Water sources are critical landmarks in this arid terrain, marked by Cobblestone Spring, Halfway Spring, and Pothole Spring. In the southeast corner, the presence of Lake Piru and the named landmark Fustero Point suggest the edge of human-managed recreation areas contrasting with the interior's more isolated features like The Pothole and Hole-in-the-Wall. This 2015 survey documents the preserved boundary lines between Ventura Co and Los Angeles Co as they intersect this protected mountain wilderness.