A participant (1st photo) dressed as Fred Flintstone, the lead character in the TV cartoon The Flintstones, sitting in a handmade boat on the Danube river, while other costumed swimmers (2nd photo) wave to spectators during the 47th Donauschwimmen (Danube Swim) in Neuburg an der Donau, Germany, last Saturday. More than 2,200 people took part in the winter swim.