This is the heart-in-mouth moment three daredevil snowboarders dice with death – and become the first people in the world to conquer a vertical slope.
The adrenaline junkies – John Jackson, Travis Rice and Mark Landvik – hurtled down the peak in the 3,000ft Tordrillo Mountains, in Alaska, in a matter of seconds.
Risking the prospect of sparking deadly avalanches through their rapid 80mph movements, the brave trio zig-zagged their way down the 50 degree angle  … Great Pictures and more