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1970 Map of Half Moon Canyon

Name: 1970 Topographic Map of Half Moon Canyon
Creator: U.S. Geological Survey
Published: 1973
License: https://creativecommons.org/publicdomain/mark/1.0/

USGS Topo · Published 1973

About this map

Big Snowy Mountains dominate this high-altitude landscape along the border of Fergus and Golden Valley counties. This 1970 field-checked survey reveals a complex network of drainages and peaks within the Lewis and Clark National Forest, including the prominent Greathouse Peak and Old Baldy. The map documents a rugged interior characterized by deep incisions like Half Moon Canyon and Stovepipe Canyon, which contrast with the more accessible northern reaches.

Evidence of local ranching and transit is visible through the Lewis Ranch and the winding Red Hill Road. A high-altitude Pack Trail crosses through Half Moon Pass, suggesting the traditional routes used to navigate these heights before modern infrastructure. The hydrology is equally detailed, tracing the headwaters of Swimming Woman Creek and the various forks of Big Spring Creek, which serve as vital water sources for the surrounding plains.