The Pinaleño Mountains rise more than 9,000 vertical feet above the desert floor of Graham County, forming one of Arizona's most dramatic Sky Islands and the range that gives Mount Graham its summit. Within a single drive, the terrain shifts from saguaro-studded foothills to spruce-fir forest found nowhere else this far south — a compressed journey through five biotic zones. The Pinaleños shelter Riggs Flat Lake, the Swift Trail Parkway, and habitat for the endangered Mount Graham red squirrel, drawing hikers, campers, and wildlife watchers from across the Southwest. For the Gila Valley, this range isn't just scenery — it's the water source, cool-season escape, and geographic anchor of the entire region.
