map of Grand Gulch Plateau indicated Green Mask Spring only two-tenths of a mile up Sheiks. I also studied the USGS quadrangle. We didn’t need a spring; we had plenty of good water; so we skipped the side canyon. A couple of years later, when I hiked down Sheiks, I realized that Sharon and I had missed one of the two most stunning and extensive collections of rock art on all of Cedar Mesa, which a fifteen-minute llama-less detour would have brought us to. (Why didn’t the name “Green Mask” tip us off?
