I have to admit I'd never hear of the Mountain of Hell bike race which takes place on a glacier at the Les Deux Alpes ski resort in France...but i'll never forget it after seeing these videos!
For the event some 700 riders participate annually in a free ride downhill mountain bike race. The course is about 15 miles of downhill riding from the top of... a glacier! Yea, straight down a frozen glacier! As you can imagine, there is plenty of opportunity for calamity, in this case after two racers crash...all hell really does break loose!
Incredibly there were no reported injuries.
And here's the lucky winners view...