He struck his hand on a very sharp rock, giving himself quite a deep gash on the thick part of his palm, just below the thumb. We are both experienced hikers with hundreds of miles under our boots, but for some reason, we took off on this hike without any first aid supplies. Best we could do was wash the cut with drinking water, use a small towel bound with duct tape to stop the bleeding, and then I rigged up a duct tape sling to keep the hand elevated as we hiked out. We drove into Mesa and, six stitches and an antibiotic shot in the rump later, wrapped up our too-eventful day! (He's doing fine now. Stitches came out earlier this week).

PS: For you Arizona-geography buffs, you can just see Weaver's Needle peeking up over the bolt in the signpost.