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Steve Austin is known as one of the toughest competitors in professional wrestling history, so his personal obstacle course, which he calls the Skullbuster, is very difficult. Being able to complete it is worth cash to one of the eight contestants in each episode. They vie in a series of head-to-head battles -- with menacing names like Trench Warfare and Pulverizer -- until just one man or woman remains. That person gets to take on the Austin-designed Skullbuster, a half-mile stretch of 10 obstructions designed to stop even hard-core athletes. Completing that leg -- which is far from certain -- earns the winner $10,000. Wikipedia