Abandoned Mining Operation

I got some beta from a friend about an abandoned mining town on the north side of the Catalinas. After looking at aerial shots from the area, I found a "route" near Biosphere 2. The "route" would involve a little hike-a-bike and would pass by another remote building in the area, along with what looked like a shed (it turned out to be a camper).

The view from the top before the fun HAB begins.