1990 Map of Mount Ajo

About this map

Organ Pipe Cactus National Monument and its interior Organ Pipe Cactus Wilderness define this high-desert landscape, dominated by the peaks of the Ajo Range. The map documents a rugged environment where survival and travel are dictated by water sources like Wild Horse Tank, Diablo Tank, and Bull Pasture Spring. The iconic Mount Ajo stands as a central landmark, flanked by deep drainages such as Arch Canyon and the various forks of Alamo Canyon. To the east, the terrain transitions into the Papago Indian Reservation and the expanse of Barajita Valley. Human impact is visible through the winding Ajo Mountain Drive and scattered infrastructure like the Barajita Well and various corrals. Occasional Mine Shaft and Prospects labels on the western slopes hint at the mineral exploration common throughout the Arizona borderlands.