Dozens of dirtbikers tumble off cliff in wild moto-x pileup (VIDEO)

At the Red Bull Hare Scramble 2013 last month,  dirtbikers joined handlebars and keep falling off the track in the same spot until someone finally figures it out. The riders don't stop tumbling down the cliff until about three dozen bikers end up in the pileup of man and machine.

Billed as "The hardest single-day endurance race in the world," this Hard Enduro series race tested the mettle of 500 bikers — of who only 14 finished the four-hour course — at the Erzberg Quarry in Austria.

Watch that first right turn guys — it's pretty rad.