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1989 Map of Greenhorn Mountain

Name: 1989 Topographic Map of Greenhorn Mountain
Creator: U.S. Geological Survey
Published: 1989
License: https://creativecommons.org/publicdomain/mark/1.0/

USGS Topo · Published 1989

About this map

Marysville sits nestled among the high peaks of the Continental Divide, serving as a focal point for a landscape defined by 19th-century mining legacy. This 1989 provisional study of the Helena National Forest reveals the dense concentration of lode operations that once drove the local economy, including the Empire Mine, Shannon Mine, and Belmont Mine near Mount Belmont. The rugged terrain is etched with the history of extraction, from the Ottawa Mine in Drumlummon Gulch to the Strawberry Mine (Prospect) further east.

Transportation through these high passes is marked by Mullan Pass, a critical crossing point on the divide. To the south, the settlement of Blossburg stands near the headwaters of Dog Creek, while numerous named gulches like Rawhide Gulch and American Gulch drainage the slopes of Greenhorn Mountain. The map provides a clear record of land use and property boundaries between Lewis and Clark Co and Powell Co.