Puissance jumping

Have y'all ever actually seen puissance jumping? I've heard about it, but I never realized just how freakin' high the puissance wall is. In this clip the wall is 2.2 meters, or about 7.2 feet. There's so much about this feat that is unbelievable, but the hardest thing for me to imagine is the view on the way down, and how the rider and the horse absorb the shock of coming down that far. I guess you'd want to make sure your stirrup leathers were in good shape.