For more than a century, a two-day festival has been held in Gloucestershire, England, centered on a strange competition. An 8-pound wheel of Double Gloucester cheese is rolled down a 200-yard hillside in the country.

A group of runners chases it, trying to catch it. The problem is that the hill is too steep for a human to stay upright, so most of the runners fall awkwardly after a few steps and then tumble the rest of the way down. Theoretically, the cheese is given to the runner who catches it. But since a wheel of cheese travels downhill much faster than the fragile and oddly shaped bipeds pursuing it, the prize usually goes to the first person to reach the bottom of the hill. Bumps and bruises are guaranteed, and more serious injuries are a definite possibility.

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