[Thalfang, December 15. Image via Getty.]

Children ride their sleds as snow cannons blow snow on the track on December 15, 2009 on the 818-meter-high Erbeskopf mountain, near Thalfang, western Germany, where temperatures fell enough to provide good wintersport conditions. AFP PHOTO DDP / TORSTEN SILZ GERMANY OUT (Photo credit should read TORSTEN SILZ/AFP/Getty Images)