2015 Map of Fourmile

About this map

Fourmile stands at a crossroads in the Black Hills, serving as a focal point for this 2015 survey of Custer County. The settlement is positioned along Highway 16, surrounded by a complex network of forest roads and drainages that characterize the high-altitude terrain. North of the town, the Custer County Airport provides an essential connection for the region, reflecting the modern infrastructure integrated into this rural landscape. The map details the transition between private holdings and federal land, showing the dense topography of ridges and draws that define the area's geography. Researchers can trace the legacy of land use through the township and range lines that segment the territory, illustrating the structured management of this pocket of South Dakota.