Three snowboarders have become the first people in the world to conquer a vertical slope.
Professional boarders John Jackson, Travis Rice and Mark Landvik plummeted down the peak in the 3,000ft Tordrillo Mountains, in Alaska at 80mph.
The boarders, who were dropped off at the summit by helicopter, launched off from a knife-edge ridge. Within seconds, they had vanished out of sight, resurfacing thousands of feet below.
They appeared unfazed by the daunting prospect of ten foot snow drifts and temperatures plummeting to 13C - as well as the high risk of starting an avalanche.
According to reports in the Daily Mail, the daredevils carried nothing more than back up CO2 canisters and transceivers in case anything went wrong....
Would you try a stunt like this? Leave your comments below!