1944 Map of Oro Blanco

About this map

Coronado National Forest dominates the high-altitude terrain of this borderlands survey, where the San Luis Mts and Cobre ridge define a landscape shaped by early mining activity. In the years during the Second World War, this region south of the Arizona interior was marked by a legacy of extraction, as evidenced by a concentration of decommissioned operations including the Yellow Jacket Mine (abandoned) and Old Glory Mine (abandoned). The settlement at Oro Blanco serves as a focal point in the northeastern corner, connected to the rugged southern canyons by a network of springs and tanks like Agua Cercada Spr. Remote outposts such as Tres Bellotas Ranch and Garcia Ranch sit within striking distance of the United States Mexico border, illustrating the sparse but persistent ranching and mining footprint in the canyons of Mojonera Canyon and Warsaw Canyon.