Guy in a wingsuit flies through a 6-foot hole in a cliff in 'possibly the most difficult BASE jump ever'

Italian wingsuit flier Uli Emanuele pulled off what GoPro is calling "possibly the most technical and difficult BASE jump ever" in the Swiss Alps.

In a video of the flight from GoPro, Emanuele identified a rock formation that's about two meters (6.5 feet) across at its widest point:

He said on Facebook that he trained for the flight for three years, and hiked for 45 hours to get to the launching point that gave him the best angle.

At the start of his jump, his target was a tiny dot on the horizon:

At the moment of truth, he squeezed through it:

 

Look how fast he's going:

Wingsuit legend Jeb Corliss congratulated Emanuele on Facebook, writing, "Super impressive bro, you have been doing some truly amazing jumps and are pushing things farther than I could ever have imagined. Good work but please be careful, we don't usually know where that line is until after we have crossed it. With what we do crossing the line usually means game over..."

The entire GoPro video of the flight is nuts: