Professional BASE jumper Uli Emanuele has performed many difficult jumps in his career, but nothing as difficult and intense as the one he performs in this video. 

For three years he's been preparing for one of the most dangerous jumps of his career. While wearing a wingsuit, Emanuele jumps off the edge of a mountain and glides his way through a cave that's only two-meters wide. 

A GoPro camera that was mounted captures Emanuele zooming through the small opening of the cave at an incredible speed.