I can't offer any information on the old trail, but I had noticed it when passing through the area. I had thought of driving/walking up the creek from Superior to see if any remnants existed below where it is visible from the highway. It looked to me like a lot of effort had been expended in the construction of the trail. I even wondered whether it would be possible to bring it back into service. I believe that this section of the 1902 topo map of Florence may show the trail coming off of Oak Flat. I am surprised that Superior is not identified on the map. I would have thought that it was an older town than what it apparently is.