Different guidebooks give this two different descriptions. Either way, it starts on the high flakes behind the tree, just left of the Roof. Pull on and get your left foot high onto a small hold. Shoot left to another flake, then up right to an edge. Stand up into the horizontal break and pick your destination...
Going left feels harder. Follow the horizontal left to a jug on a flake, then move straight up with a bad crimp to better holds and the ledge.
Going right/straight up is much easier. From the horizontal, reach up right into the flake (below the roof) and follow the arete straight up with crimps and jugs to reach the ledge.
Fun either way.
Left end of Upper Cliff, immediately left of the Roof. Approach trail to top of cliff is left of the climb.