1964 Map of Granite Pass, 1967 Print
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1964 Map of Granite Pass

USGS Topo · Published 1967

About this map

The high Bitterroot Divide forms the backbone of this mid-1960s survey, marking the jagged boundary between Idaho and Montana. This rugged corridor is defined by the heavy timber of the Lolo National Forest and Clearwater National Forest, where infrastructure is limited to a network of high-altitude paths. Travel through the region relied on the State Line Trail and various other routes labeled as Pack Trail, emphasizing the area's isolation and its primary use for forestry and fire monitoring. A prominent landmark is the Lookout Tower at BM Hill, which provided a strategic vantage point over the drainage basins of Crooked Fork and Boulder Creek. Near the southern edge, Granite Pass serves as a critical transition point between the two states, while northern summits like Granite Peak and Pilot Knob dominate the skyline.


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Map Details

Date Portrayed1964
Date Published1967
PublisherU.S. Geological Survey
Map TypeTopographic
Scale1:24,000
Physical Dimensions22 x 26.8 inches

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CopyrightPublic Domain