About 15 yards right (south) of the Extension Wall proper and maybe 10 yeards right of Pete's Gritstone Wall (the V5 or V10 sds problem just right of the descent dihedral) is a rounded arete capped by a small overhang on the left. About eight feet left of the arete, look for good starting flakes on the west-facing wall followed by a secton that may initially look blank.
Start on the good flakes and pull up and slightly right on progressively thinner holds. When it seems like you can go no further, high-step and a long reach to an incut edge becomes possible. From there, pass the "spooky tooth" and use slopers and jams under the overhang to reach for the right side of the overhanging top. Pull over the 20' topout is balancy, but reasonable. All in all, a pretty fun problem.
a couple crashpads are nice