In reply to Euge:
Did this about 10 years ago. There was a chock stone about 20 feet up which could be gained by climbing the left wall (looking up the Chasm). Above that wide bridging, with the odd move of feet on one wall, hands on the other, gained a point where you could bridge along toward the back of the Chasm and finally, heave out, on flat holds onto the right wall.
I'm very impressed that you could see some holds! Didn't find a decent one on the entire pitch.
Also, that you found a runner to lower off. The chock stone was the only protection I found and that was too low to be any use.
It's an amazing route, but in retrospect, a total waste of a dry day considering all the other good climbing nearby...