High Quality Content by WIKIPEDIA articles! The Pinaleño Mountains are a remote mountain range in southeastern Arizona. They have over 7,000 feet (2,100 m) of vertical relief, more than any other range in the state. The mountains are surrounded by the Sonoran-Chihuahuan Desert. Subalpine forests cover the higher elevations. According to The Nature Conservancy, they traverse five ecological communities and contain "the highest diversity of habitats of any mountain range in North America." The highest point is Mount Graham at 10,720 feet (3,267 m). Some locals refer to the mountains as "The Grahams." The mountains cover 300 square miles (780 km2) and are part of the Coronado National Forest, Safford ranger district.