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1985 Map of Bison Mountain

Name: 1985 Topographic Map of Bison Mountain
Creator: U.S. Geological Survey
Published: 1986
License: https://creativecommons.org/publicdomain/mark/1.0/

USGS Topo · Published 1986

About this map

The Continental Divide winds through this high-country landscape, marking the topographic crest between the Helena National Forest and Deerlodge National Forest. This 1980s provisional study captures a wilderness terrain defined by the headwaters of the Little Blackfoot River and its numerous tributaries, including Ontario Creek and Monarch Creek. Evidence of mineral exploration is scattered across the slopes of Negro Mountain and Treasure Mountain, where numerous prospects are recorded.

Transportation through these mountain passes is limited to a traditional Pack Trail, suggesting the area's primary use for forestry and recreation rather than permanent settlement. Low-lying marshy areas like Blackfoot Meadows contrast with the steep elevations of Baldy Ridge and Forbidding Ridge, providing a clear picture of the complex drainage patterns that feed the Trout Creek and Spotted Dog Creek watersheds.