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1958 Map of East Portal, 1983 Print
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1958 Map of East Portal

USGS Topo · Published 1983

About this map

The Continental Divide serves as the backbone of this high-altitude survey, marking the intersection of the Arapaho National Forest and Roosevelt National Forest. The map documents a critical point in Colorado's transportation history, centered on the East Portal of the Moffat Tunnel. While the Denver and Rio Grande Western line pierces through the bedrock, remnants of older engineering are visible nearby. The serpentine Old Railroad Grade winds through the topography, passing the distinctive Riflesight Notch.

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Map Details

Date Portrayed1958
Date Published1983
PublisherU.S. Geological Survey
Map TypeTopographic
Scale1:24,000
Physical Dimensions22.03 x 26.95 inches

Editions of this 1958 East Portal Map

Historical Maps of Diamond Lake Campground Through Time

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Source Details

SourceU.S. Geological Survey
CopyrightPublic Domain