1968 Map of Fourmile Knoll

About this map

The historical (Sublette Cutoff) Emigrant Trail crosses the high plateau of Sweetwater County in this late-1960s survey. This portion of the Oregon Trail system provided a direct but water-sparse route for 19th-century pioneers, visible here as it traverses Sublettes Flat toward the western horizon. The arid landscape is defined by drainage features like Simpson Gulch and prominent landmarks such as Fourmile Knoll, which served as essential navigational waypoints in an otherwise uniform terrain. The emergence of modern infrastructure is marked by the Lincoln Sweetwater Road, which follows the general corridor of the traditional emigrant paths, illustrating how 20th-century transportation networks in Wyoming often reinforced the same east-west passages established during the era of westward expansion.