2017 Map of Twelvemile Knoll

About this map

The California-Oregon Trl cuts across the northern reaches of this Wyoming landscape, marking a historical corridor of westward expansion that remains legible in the terrain of Sweetwater County. The map is defined by the high, arid topography of the Red Desert region, centered on the prominent Twelvemile Knoll and the adjacent Twelvemile Canyon. These features, along with Simpson Gulch, illustrate the complex drainage patterns and erosion of the high plateau. Human activity is largely confined to utility and access corridors, such as Eighteen Mile Rd and Blm Rd 4204, which navigate the township and range boundaries of the Public Land Survey System. The lack of permanent settlements emphasizes the map's value for tracing historical overland routes and understanding the physical geography encountered by early travelers.