I don't know what they expected, riding bikes down a ski slope, but you know what to expect, you just don't know when. When it starts, it's all downhill from there, so to speak. You can see the long version here.
Held annually at the Les Deux Alpes ski resort in France, the Mountain of Hell pits 700 racers against a 15-mile course of snow, ice, rocks, and singletrack. The riders descend 8,530 feet in the process. And what’s best is they all start at the same time. So when one rider loses it on the slippery glacier, well, it becomes a pinball machine at full tilt.(via Bits and Pieces)