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1980 Map of Rio Alto Peak, 1985 Print
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1980 Map of Rio Alto Peak

USGS Topo · Published 1985

About this map

Rito Alto Peak and the high ridges of the Sangre de Cristo Mountains define this 1980 survey, where the boundary between Saguache and Custer counties follows the jagged continental divide. The landscape is a complex network of glacial basins and high-altitude water bodies, including Rito Alto Lake, South Crestone Lake, and Iris Lake. Human activity is concentrated along the lower elevations and through arduous mountain crossings like Hermit Pass and Venable Pass. A notable piece of historical infrastructure, the Old Railroad Grade, runs along the western base of the range near the Crestone Cem. The presence of several Prospect markings and a Gravel Pit indicates the legacy of resource exploration in the canyons of the Rio Grande National Forest and San Isabel National Forest.

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Map Details

Date Portrayed1980
Date Published1985
PublisherU.S. Geological Survey
Map TypeTopographic
Scale1:24000
Physical Dimensions22.1 x 26.8 inches

Editions of this 1980 Rio Alto Peak Map

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Source Details

SourceU.S. Geological Survey
CopyrightPublic Domain