Start up Cul de Sac as normal. At the roof, keep climbing left, up and over to an eight inch wide finger slot. Work up the arete with thin sidepulls, slopers, and underclings. Follow arete to the top.
Protection
I believe Groth and Bechlar used some hand placed steel. Seth Dyer and I didn't use any of that, but the most important piece is a small (#2?) wire right dab in the middle of the crux. In my world this thing comes with a pretty heavy R rating.