2017 Map of Cathedral Rocks

About this map

Smith Prairie and the deep incision of the South Fork Boise River dominate this portion of the Boise National Forest in Elmore County. The landscape is defined by the sharp contrast between the level heights of the prairie, served by the Smith Prairie Airport, and the steep, complex drainage systems of Rock Cr and Granite Creek. Early water management is evident along the northern plateau via the Pierce Ditch, while the namesake Cathedral Rocks rise above the river canyon to the southwest. This area preserves a network of primitive forest roads and spurs, such as Prairie-Pine Road and the Prairie Cutoff, which provide access to high points like House Mtn and the southern Danskin Ridge. The map documents the remote terrain where seasonal creeks like Dead Horse Cr and Menneke Cr feed into the regional river system.