"Is this real?"... High-speed sprint down a 100m vertical cliff in just 25 seconds

(Seoul=Yonhap News) A video of a man sprinting down a nearly vertical, steep cliff with his bare body is going viral online.
According to Reuters, the video was filmed on the 12th (local time) in Gansu Province, Northwest China.
In the video, the man descends a precipitous mountainside at high speed, kicking up clouds of dust.
After passing through a grassy slope, he momentarily hesitates upon entering a dirt cliff section, but immediately presses his entire body against the wall, sliding down and successfully landing at the bottom of the mountain.
It took only 25 seconds to descend the vertical cliff, which is nearly 100m high.
The man, who performed the high-speed sprint down the cliff without any protective gear, is reported to be an extreme sports athlete and professional stuntman.
Watch the video for more details.