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1986 Map of Tonkin Summit

Name: 1986 Topographic Map of Tonkin Summit
Creator: U.S. Geological Survey
Published: 1986
License: https://creativecommons.org/publicdomain/mark/1.0/

USGS Topo · Published 1986

About this map

The Simpson Park Mountains and Roberts Mountains dominate this high-desert landscape in central Nevada, partitioned by the wide floor of Denay Valley. This mid-1980s provisional survey shows a region defined by its water sources and mining exploration, with numerous unnamed Prospects dotting the slopes of Rooster Canyon and Pat Canyon. Scattered ranching and transit points like Indian Ranch and the small settlement of Tonkin provide human anchor points in the vast basin-and-range topography.

Water is the lifeblood of this arid terrain, marked by a network of vital points such as Indian Spring, Tonkin Spring, and several corrals. The map records the passage through the mountains via McClusky Pass and along Telephone Canyon, while drainage is captured by seasonal flows like Pete Hanson Creek and Denay Creek. The presence of these named springs and canyon routes suggests a long-standing pattern of livestock movement and mineral prospecting typical of Eureka County.