Winterberg (dpa / lnw) - An eleven-year-old boy fell and was seriously injured when descending a so-called downhill route in the Winterberg bike park. He had to be flown to a hospital in a rescue helicopter, the police said on Monday. The accident happened around 5 p.m. on Sunday. On Sunday morning, a 30-year-old was seriously injured in the bike park and flown out with the rescue helicopter. The bike park in the Sauerland winter sports area advertises with numerous routes, the start of which you can currently use lifts, among other things.