2021 Map of Engine Mountain

About this map

The Peloncillo Mountains dominate this high-desert landscape along the Arizona-New Mexico border, where the convergence of four counties—Cochise, Graham, Greenlee, and Hidalgo—meets among high peaks and deep drainages. At the heart of this rugged survey area, Engine Mtn and Horsefoot Mtn rise above a complex network of canyons, including Antelope Canyon and Little Doubtful Canyon. Water sources are vital but sparse in this arid terrain, marked by Indian Spring and Rockhouse Spring which supported early travel and ranching. The topographical data reveals the transition from high mountainous divides to lower-lying areas like Playas de Los Pinos. This survey captures the isolated character of the borderlands, where few modern roads like Co Rd A021 penetrate the landscape, leaving centuries-old natural landmarks as the primary points of orientation.