In flight, pilots use a technique called "Relative Motion" to establish if they will clear a mountain pass or not, well ahead of actually getting here. Using Relative Motion, Alexander Polli can easily line himself up with the gap, and stabilise the motion on the other side of the gap: this ensures he is correctly lined up a LONG way before he gets there.
So, he knows if he's going to live or die - there's no guesswork involved.
Having narrowly escaped death several time under a paraglider, and knowing many now-dead adventurers, I can assure you Alexander Polli won't die of old age, as he is the proverbial "bold pilot".

First and second atempt. Just fly through a sign...?

Balls of Unobtainium O_o

#2 testing the wind speed....and controlling the velocity..it's a lot of physics involved..amazing

a sudden down burst, or thermal at the last moment... it is frightening just to think about it... I hope he'll have a chance to tell stories about it to his grand kids.

#2 "signs".... it's called aiming at a window... I concur with #4...

but the bottom line despite all the physics ... it's totally...mental !!!

a big Hi5

What a Rush!!

Out of all wingsuit flying videos, this one is my favorite: http://www.youtube.com/watch?v=fOaBBt6sQns

Holy shit how fast he passed the opening!