His name is Calen Chan, and this is a recent Parkour run, filmed from the first-person point of view (POV), of the Skyladder Parkour course at Tianmen Mountain in China.
“Parkour” has its origins in a training program for French Special Forces known as “Parcours du combatant.”
Chan had the opportunity to visit this beautiful location called “Heaven’s Gate.” It has an average incline of 45 degrees, and is 999 steps long (about 3 football fields)!
Obviously, this was difficult, and he had to stay cautious and not sprint down the entire path past deadly drops without slowing down!
The daring “freestyle runner” seems to be among the first to do the whole thing with a GoPro in his mouth.