For James Kassay, there's only one way out of this crevice:
This is a beautiful video. The filming is really well done, but obviously it's the climbing that takes the cake. He hardly stops to take a breath - only a few times at the very end to prepare himself for the final push, which is for sure the trickiest part.
He climbs out of this crevice, called the Wheel of Life, with amazing grace and speed.