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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

Bison Mountain and the high peaks of the Continental Divide define this landscape where the Helena National Forest meets the Deerlodge National Forest. The 1985 survey illustrates a wilderness shaped by drainage systems like the Little Blackfoot River and Trout Creek, which carve through a series of named gulches and ridges including Baldy Ridge and Forbidden Ridge.

Evidence of historical resource exploration is scattered across these slopes, with several locations marked simply as Prospect near Treasure Mountain. Navigating this high-elevation terrain required established routes such as the Monarch Pack Trail and Pack Trail, which connect significant natural clearings like Blackfoot Meadows to remote water sources like Limburger Spring. The boundary between Powell and Jefferson Counties runs along the southern ridges, marking a high-country divide that has historically separated these Montana regions.