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1918 Map of Mt. Riley
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1918 Map of Mt. Riley

USGS Topo · Published 1918

About this map

The United States Mexico international boundary defines the southern limit of this 1917 military-focused survey, where the prominent volcanic peak of Mt Riley rises above the Chihuahuan Desert. The landscape is dominated by the sprawling volcanic fields of the West Potrillo Mountains and the distinct ridgeline of the East Potrillo Mts. Transportation through this arid corridor relied heavily on the El Paso and Southwestern railroad, which arcs across the southern portion of the sheet near a marker labeled Monument. Remote ranching operations, such as Phillips Ranch and Cox Ranch, represent the sparse human footprint in this borderland, supported by essential water infrastructure like Cox Tank. The survey reflects a strategic wartime effort by the War Department to document the difficult terrain of Doña Ana County during a period of heightened border security.

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Map Details

Date Portrayed1918
Date Published1918
PublisherU.S. Geological Survey
Map TypeTopographic
Scale1:62,500
Physical Dimensions16.4 x 20.2 inches

Editions of this 1918 Mt. Riley Map

Historical Maps of Doña Ana County Through Time

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Source Details

SourceU.S. Geological Survey
CopyrightPublic Domain