The backstage area is cool because one wall of each dressing room consists of the natural rock formations. It's like they hired a decorator who was obsessed with The Flintstones. You expect the faucet in the bathroom to be a woolly mammoth snout.
Luckily there was a car that shuttled people from the parking lot to the backstage area, because it is a steep hike. I think it is a training area for people who want to summit Everest. Halfway up you see discarded oxygen tanks.
I especially liked the visitors center at the top of the hill. It features plaques that list every artist who played Red Rocks in a given year. For an information junkie like myself, that was fantastic. I could have spent hours just looking over the lists. I wish more venues would put together something like that.