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2018 Map of The Dark Hole

Name: 2018 Topographic Map of The Dark Hole
Creator: U.S. Geological Survey
Published: 2018
License: https://creativecommons.org/publicdomain/mark/1.0/

USGS Topo · Published 2018

About this map

The Dark Hole defines the high, ridged interior where Fresno, Monterey, and Kings counties meet in the Diablo Range. This 2018 survey reveals a landscape of severe topographic relief, characterized by prominent peaks like Castle Mtn, Black Mtn, and the distinctive Picacho Rock. The map illustrates a reliance on natural water sources in this dry upland environment, marking several vital points such as Vaquero Spring, Cold Spring, and Sugar Tail Spring.

Transitioning from the heights of Reef Ridge to the more level terrain of Turkey Flat, the area is etched by numerous drainages including Avenal Cr, Canoas Cr, and Zapato Chino Canyon. The distribution of features like Oak Flat and the Kreyenhagen Hills suggests a land primarily utilized for ranching or open-space management, with Turkey Flat RD providing one of the few primary access points through the canyon systems and across the county lines.