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2022 Map of Idria

Name: 2022 Topographic Map of Idria
Creator: U.S. Geological Survey
Published: 2022
License: https://creativecommons.org/publicdomain/mark/1.0/

USGS Topo · Published 2022

About this map

The Idria settlement sits deep within the high elevations of the Diablo Range, surrounded by a complex system of peaks and drainages. This high-country landscape is defined by its topographical prominence, featuring notable summits such as Sampson Peak, Idria Peak, and San Carlos Peak. The terrain is divided into distinct upland regions including the Griswold Hills, Tumey Hills, and Ciervo Hills, which overlook deep-cut features like Larious Canyon.

Water sources are vital in this arid upland environment, evidenced by named features like Elkhorn Spring and Larious Spring. Historically significant routes like the New Idria Rd and Aurora Cutoff traverse the area, connecting the remote settlement of Vallecitos to the rugged interior. The map illustrates a landscape where geography dictates movement, with drainage systems like San Carlos Cr and Tumey Gulch carving paths through the high ridges.