The BASE jumping stunt was filmed by Polli and his crew from multiple angles, including one mounted on Polli's own helmet. It's from this camera that you can catch Polli's entire death-defying flight — from free fall to controlled flight and through the arch and beyond. The Roca Foradada Mountains in Montserrat, Spain are usually thought of as a pristine, natural landscape. On the day that Polli and his crew set up their stunt, however, they became home to a world of adrenaline and awe.
The arch which Polli traverses during the stunt is only six feet wide. That's about as much leeway as Kirk and Spock are given in the Star Trek Into Darkness trailer. Thankfully for all concerned, Polli clears his stunt cleanly in this video that has to be seen to be believed.