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1968 Map of Volcano Reef, 1972 Print
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1968 Map of Volcano Reef

USGS Topo · Published 1972

About this map

Volcano Reef rises as the dominant geological landmark along the eastern edge of the Lewis and Clark National Forest in this 1968 study. The terrain is defined by a series of dramatic coulees, including Ben English Coulee, Gansman Coulee, and Toms Coulee, which channel runoff from the high ridges down toward the plains. The drainage network is complex, featuring the upper reaches of the Dry Fork Marias River and several branches of Dupuyer Creek. Human activity is sparse but visible through the presence of a Gas Well and several Drill Hole locations, indicating the area's resource exploration history. A network of primitive Pack Trail and Jeep Trail routes provides the only access into the high country of Blackleaf Canyon, reflecting the area's transition from open range to protected forest land.

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Map Details

Date Portrayed1968
Date Published1972
PublisherU.S. Geological Survey
Map TypeTopographic
Scale1:24,000
Physical Dimensions22 x 26.8 inches

Editions of this 1968 Volcano Reef Map

This is the sole edition of this map. No revisions or reprints were ever made.

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Source Details

SourceU.S. Geological Survey
CopyrightPublic Domain