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1988 Map of Adair

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

USGS Topo · Published 1988

About this map

Mining exploration and railroad history define this high-country landscape along the divide between Idaho and Montana. The former settlement at Adair (Site) serves as a primary historical anchor, located near a tunnel where the Old RR Grade cuts through the mountains. This 1988 provisional survey documents the extensive network of pack trails and extractive infrastructure that once dominated the Bitterroot Range, including the Hansy Mines and numerous unnamed Prospects and Adits scattered across the steep drainages of Mineral Creek and Silver Creek.

The terrain is characterized by a series of prominent summits such as Dominion Peak, Grays Peak, and Quarles Peak, which mark the boundary between the St Joe National Forest and the Lolo National Forest. This map captures a transition era where industrial mining and early rail access had given way to forest management, preserving the location of remote shafts and trails that provide essential context for understanding the region’s late 19th and early 20th-century development.