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1972 Map of Tungsten

Name: 1972 Topographic Map of Tungsten
Creator: U.S. Geological Survey
Published: 1975
License: https://creativecommons.org/publicdomain/mark/1.0/

USGS Topo · Published 1975

About this map

Mining operations and narrow mountain transit corridors define this 1970s landscape at the junction of Boulder, Gilpin, and Jefferson counties. Tungsten and Tungsten Mountain serve as centerpieces of the region's industrial heritage, surrounded by a dense concentration of historical workings including the Mammoth Mine, Manchester Mine, and the Tungsten Shaft. The Denver and Rio Grande Western railroad snakes through the steep terrain, connecting settlements like Rollinsville and Pinecliffe via several engineered tunnels.

Water management is prominent across the quadrangle, from the massive Barker Reservoir to the Gross Reservoir on the eastern edge. High-elevation landmarks such as Starr Peak Lookout Tower and Thorodin Mountain overlook the Roosevelt National Forest, while the southern reaches transition into the protected lands of Golden Gate Canyon State Park. This survey captures a moment when the region's early 20th-century mining infrastructure was integrated into a landscape increasingly defined by recreation and water storage.