Arnett Canyon, Arizona. Located south of highway 60 and just west of Boyce Thompson Arboretum State Park, it is located across the ridge below which the arboretum is located. One must hike in from the west or east, and we hiked from the west as it seemed easier to
approach the canyon from there and follow the Arnett Creek east around to the bottom of the canyon. One can also approach the canyon from the perlite mine in Superior, Arizona and head west around the ridge shadowing the arboretum. I have never done that, and it seems one would have to cross private property,