Harquahala Mountains Trail

Harquahala Peak Road winds through the remote Harquahala Mountains to reach the summit at 5,681 feet, the highest point in southwestern Arizona. This forgotten range holds remnants of early 20th-century mining operations, including the ruins of the Bonanza Mine and scattered equipment along the lower reaches. The trail becomes increasingly rough as it climbs through diverse Sonoran Desert vegetation zones, from saguaro forests to oak woodlands, ending at a fire tower with panoramic views across the Sonoran Desert to Phoenix and beyond.

The route requires high-clearance 4WD for the upper sections where loose rock and steep grades challenge traction. Best driven October through April when temperatures are manageable; summer heat makes this trail dangerous. No permits needed, but bring extra water, food, and emergency gear as this area sees few visitors and cell service is nonexistent. The trail offers solitude and mining history exploration in one of Arizona’s most overlooked mountain ranges.