We had gotten to the steep part of the Blue Creek Canyon trail when we stopped at the 3 hour mark. The weight of the packs was starting to get to both us. We decided against hiking on up to Colima and turned back. I think both of us were ready to leave the Chihuahuan Desert for the Sonoran. I happened upon this cactus when we stopped, Ferocactus hamatacanthus, the Fishhook barrel.