Phoenix Field Office
2015 West Deer Valley Road
Phoenix, AZ 85027
Historic observatory, used extensively between 1920 and 1925
Map + Directions
Take I-10 to Salome Road exit. Go north to Eagle Eye Road 9.6 miles then turn right. Go 8.5 miles to the dirt road heading north. Follow the dirt road to the western end of the Harquahala Mountains Wilderness.