1996 Map of Koht Kohl Hill

About this map

The Tohono O'Odham Indian Reservation landscape is defined by the broad drainage of the Aguirre Valley and the sharp rises of desert peaks. While the map reflects planimetry from 1996, the presence of historical locations like Skoksonak and Quinlin provides a window into older habitation patterns within Pima County. The eastern edge of the quadrangle is marked by the Roskruge Mountains, where a Mine Shaft and several Prospect labels indicate early 20th-century mineral exploration. Prominent volcanic features such as Koht Kohl Hill, Cerro Negro, and Twin Peaks punctuate the arid terrain, while drainage from Aguirre Wash and various unnamed channels illustrates the hydraulic character of the basin. This survey documents the intersection of indigenous land, localized mining history, and the natural desert environment.