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1958 Map of Keystone

Name: 1958 Topographic Map of Keystone
Creator: U.S. Geological Survey
Published: 1988
License: https://creativecommons.org/publicdomain/mark/1.0/

USGS Topo · Published 1988

About this map

The Snake River valley serves as the focal point for this mountain landscape, showing the early infrastructure of Keystone alongside deep-rooted mining history. While the northern portion of the map highlights the Roberts Diversion Tunnel and municipal developments like the Keystone DMWW, the southern reaches within the Arapaho National Forest reveal a dense network of high-altitude claims. From Saints John near the Saints John Mine to the Wild Irishman Mine, the geography is defined by narrow gulches and steep ridgelines.

Industrial activity is evidenced by numerous features such as the Ida Belle Mine and extensive Tailings along the Swan River. Recreation and transport also mark the area, with the Colorado Trail and early Ski Lift infrastructure on Keystone Mountain indicating the region's transition from extraction to mountain tourism. Prominent peaks like Independence Mountain and Porcupine Peak frame the various forks of the river systems that once supported these remote operations.