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1958 Map of East Portal, 1965 Print
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1958 Map of East Portal

USGS Topo · Published 1965

About this map

The Continental Divide forms the spine of this 1950s survey, marking the boundary between the Arapaho National Forest to the west and Roosevelt National Forest to the east. Modern engineering meets high-altitude terrain at the East Portal, where the Moffat Tunnel carries the Denver and Rio Grande Western railroad beneath the divide. This transit route contrasts sharply with the remnants of the Old Railroad Grade winding toward Rollins Pass, a legacy of the area's difficult mountain passage. Numerous high-alpine basins are identified, including Devils Thumb Park and the waters of Yankee Doodle Lake and Skyscraper Reservoir. The map captures a landscape defined by its transition from industrial utility to wilderness, where early mining attempts at a solitary Mine exist alongside established trails like the High Lonesome Trail.

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Map Details

Date Portrayed1958
Date Published1965
PublisherU.S. Geological Survey
Map TypeTopographic
Scale1:24,000
Physical Dimensions21.39 x 26.81 inches

Editions of this 1958 East Portal Map

Historical Maps of Diamond Lake Campground Through Time

181 maps found

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Source Details

SourceU.S. Geological Survey
CopyrightPublic Domain