I don’t where this venue is, so I can’t answer Lee Ashworth’s question:
Just wondering why there is no info on this anywhere. We took a guided tour in this canyon recently and were told about an outdoor concert held there. It was quite difficult as all the equipment and a generator had to be carried to a huge flat rock part way up the canyon. At the time this area had been taken over by group of hippies. Any info would be greatly appreciated.