We reached the base of the climb and packed up around 6:45pm. Even with a 70m rope, rappelling two climbers down 6 full length pitches took the better part of two hours, after which we were thoroughly exhausted. With nerves (and pride) rattled and only a few sips of water in our canteens, we started the 4+ mile cross country uphill march back to our tent. Here is the base of the climb. We probably got almost as far as the right facing notch in the "horizon" of the climb... less than half way and probably with the hardest climbing still above us.