“Twenty young men chase a cheese off a cliff and tumble 200 yards to the bottom, where they are scraped up by paramedics and packed off to hospital.”

That’s a typical description of the Cooper’s Hill Cheese Rolling and Wake, held each May at Cooper’s Hill near Gloucester, England. The participants run downhill after a Double Gloucester cheese, which the winner gets to keep. Theoretically they’re trying to catch the cheese, but it rapidly gets up to 70 mph (knocking over a spectator in 1997) and this rarely happens.

The racers themselves get sprained ankles, broken bones and concussions, and the first-aid services are getting stretched as the race grows in popularity. Last year they ran out of ambulances.