Don't get me wrong...I'm having a great time trying to figure these guys out. But as anyone who has been to Sedona - or the rest of the Colorado plateau for that matter - these rocks screw with you. The light changes about every twenty minutes, you start to lose yourself in the cracks and crags, and then there's the whole temperature thing.
I'm not talking about the desert heat. I'm talking about the fact that there are cool green colors in front of warm red colors -- something quite different than the usual cool colors receding into the background.
Second study: from Schnebly Hill