M4

Crimp, balance, and smear up the delicate slab, following a path of tiny pebble holds between the lichen. Strength won't get you through this!

Past Waiting for the Messiah, go left and up following the path of least resistance until you come to a wide, blank-looking face. The route is the right-leaning stripe of lichen-less (and, at first glance, featureless!) rock in the middle.

Pad. A fall would cheese grate you down the slab--not really dangerous but unpleasant for sure.