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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 serves as the backbone of this high-altitude 1958 survey, where the engineering marvel of the Moffat Tunnel pierces the granite beneath Rollins Pass. At the eastern entrance, the settlement of East Portal marks the transition from the surface rails to the subterranean passage, while the winding Old Railroad Grade provides a physical record of the earlier, treacherous path over the crest. This route famously includes the sharp curve at Riflesight Notch, reflecting the extreme technical challenges faced by early mountain railroading.

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Map Details

Date Portrayed1958
Date Published1965
PublisherU.S. Geological Survey
Map TypeTopographic
Scale1:24,000
Physical Dimensions22.3 x 26.9 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