OK, which guy is crazier. Graham Dickinson, the guy we see in the video below who's so impossibly close the ground and the trees and the mountain face and basically centimetres away from crashing the entire time during this wingsuit video. Or the camera man, Dario, who is seeing all the ridiculous things Dickinson is doing and still has to keep track of him and react fast enough to capture the footage.
I think the answer is simple: they're both nuts. They both flew over 177km/h.
And the rear-view footage from Graham Dickinson's helmet cam: