I led the first pitch of Great Slab. Towards the top, I couldn't find the right holds and ended up falling. I was well above gear, and my climbing partner Raef was also yanked off his belay stance, so I probably fell about 15m in total, even though the gear (blue offset number 8) held. Bouncing down the slab I sustained severe bruises to my backside (more than three days later, one of my buttocks is almost entirely maroon) but didn't break any bones. Raef lowered me down. The 60m rope just got me to the ground, suggesting my last piece of protection was about 30m up the 45 pitch. I traversed back to the belay stance and untied. Raef then climbed my end of the rope to recover all but the top piece of gear, which we left. Initially Raef had hoped to down-lead the climb and recover all the gear, but reversing through the traverse at the bottom of the pitch didn't seem possible. We then walked off. It could have been much worse, but we were pretty shaken.