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1965 Map of Hole-In-The-Rock

Name: 1965 Topographic Map of Hole-In-The-Rock
Creator: U.S. Geological Survey
Published: 1968
License: https://creativecommons.org/publicdomain/mark/1.0/

USGS Topo · Published 1968

About this map

Big Porcupine Creek carves a deep path through this mid-1960s landscape, crossing the boundary between Garfield Co and Rosebud Co. The terrain is defined by a network of drainage systems, where seasonal water flow has sculpted significant formations like Devils Canyon and the notable Hole-in-the-Rock. This area of eastern Montana is characterized by its isolation and specialized water features, including a Flowing Well and various springs that supported ranching operations in the arid breaks.

The map records the intricate network of coulees, such as Germo Coulee and Hanson Coulee, which feed into larger arteries like Acorn Creek. These topographic details illustrate how the physical geography dictated movement and land use before modern development. Detailed fence lines, marked by fine red dashed lines on the original survey, trace the efforts of early 20th-century settlers to manage this sprawling territory.