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1990 Map of Cunningham Pass

Name: 1990 Topographic Map of Cunningham Pass
Creator: U.S. Geological Survey
Published: 1990
License: https://creativecommons.org/publicdomain/mark/1.0/

USGS Topo · Published 1990

About this map

The Harcuvar Mountains dominate this 1990 provisional survey, acting as a high divide between the broad Butler Valley to the northwest and McMullen Valley to the southeast. This desert landscape is characterized by a high density of mining activity concentrated around Cunningham Pass. Named operations such as the Little Giant Mine, Critic Mine, and Columbia Mine are clustered near the mountain's crest, supported by a network of unimproved roads and four-wheel-drive trails.

Evidence of industrial infrastructure is visible in the presence of an Inclined Railway near the Bonanza Mine and the Centroid Mine. To the south, the terrain levels out into the flats near the Winchester Reservoir and the Alamo Road. The map provides a detailed look at the extraction-based economy of the region, where every canyon and ridge is marked with numerous Adits, Mine Shafts, and Prospects, illustrating the intensive mineral exploration of this corner of Arizona.