he does some dangerous manuvers out there, but he has a film crew/person to help him out if dire need be. check out les stroud aka suvivorman who does more or less the same thing and is alone- films his own chit.
I am no survival expert by any means but I like Les Stroud better. He advises you NOT to do crazy things like climbing. Makes sense to me that one wouldnt want to chance a broken limb from a fall. Seems like all this guy does is climb up and down things!!!!