1994 Map of Atascosa Mountains

About this map

The United States-Mexico border defines the southern reach of this landscape, where the Atascosa Mountains and Pajarito Mountains rise above the high desert. Settlement is concentrated in small outposts like Sasabe, home to a U.S. Customs station, and Arivaca, which serves as a gateway to the Buenos Aires National Wildlife Refuge. The map details a region shaped by historic mineral extraction, evidenced by the Montana Mine, Warsaw Mine, and Yellow Jacket Mine scattered near Oro Blanco. High-altitude landmarks such as Atascosa Peak, Castle Rock, and Montana Peak overlook deep drainages like Peck Canyon and Bear Valley. This survey captures the transition from protected wilderness areas like the Pajarito Mountain Wilderness to the open ranching and mining lands that have long characterized the Santa Cruz County borderlands.