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1964 Map of Big Ice Cave

Name: 1964 Topographic Map of Big Ice Cave
Creator: U.S. Geological Survey
Published: 1967
License: https://creativecommons.org/publicdomain/mark/1.0/

USGS Topo · Published 1967

About this map

The Pryor Mountains define this high-altitude terrain along the border of the Crow Indian Reservation. This mid-1960s survey illustrates a rugged landscape of limestone features and deep canyons within the Custer National Forest, where unique geological formations like Big Ice Cave and Crater Ice Cave provide year-round frozen environments. The area is marked by a network of jeep trails connecting isolated family holdings such as the Greenough Ranch and Schwend Ranch.

Drainage patterns are complex, with the North Fork Sage Creek and Dry Head Creek cutting through the uplands. Landmarks like Commissary Ridge and Island Ridge dominate the eastern portion of the sheet, while specific livestock and traveler water sources like Teeples Spring and Roberts Spring are noted throughout. Small-scale mining activity is evident from several unnamed prospects scattered across the ridges.