Crazy hot and humid, and long. Ok run for the first part, then I started getting pretty dehydrated and tired. I was having some serious disagreements with the map over the big cliff line vs small cliff line, which seemed to be used mostly randomly. Got totally fubared at 15, including several times of standing on top of both cliffs it was between, but never actually looking down into the crack. Blew lots of time and got all dehydrated and dizzy and lightheaded every time I went uphill on the next couple, then unfolded the map and saw the long leg to 19, so I bailed and stumbled back.