I hadn't actually watched this vid since I was at school when I saw it.
That is completely and utterly insane.
The dude is using an ordinary geology hammer and pounding pitons into mud.
The look on the 2nd's face when he pulled that one piton with an ice axe was priceless.
The cliff they are climbing is intensely folded (an anticlinal fold) and faulted.
I can see multiple faults in the opening shots.
It also looks like a bunch of hydrothermal activity furhther weakened the structure - chemically altered.
Damn entertaining.