Loading map...

2011 Map of Keystone Peak

Name: 2011 Topographic Map of Keystone Peak
Creator: U.S. Geological Survey
Published: 2011
License: https://creativecommons.org/publicdomain/mark/1.0/

USGS Topo · Published 2011

About this map

The Keystone mining district and the deep valley of the Clark Fork define this portion of Mineral County during the early 21st century. The map reveals an intensive history of extraction concentrated around Keystone Peak, where a dense network of claims includes the Keystone Mine, the Nancy Lee Mine, and the Nancy Lee Millsite. Further exploration of the surrounding drainages shows specialized operations like the Little Pittsburg Mine to the west and the Triumph Mine to the east, illustrating the enduring footprint of hard-rock mining on this landscape.

Transportation and topography are closely linked, with the river providing a natural corridor through Donlan Flats near the settlement of Donlan. To the south, high-elevation terrain is marked by named gulches such as Pack Gulch, Firman Gulch, and Brian Gulch, which feed into the Keystone Creek and Pardee Creek systems. These features, along with forest service routes like Sloway Rd and Six Way, highlight the intersection of industrial access and the natural geography of the Bitterroot Mountains.