Levi LaValle of the USA takes flight during Snowmobile Freestyle at the X Games in Aspen on Jan. 24, 2013.
Sure, motorcycles are great -- and snow is great -- but what if you put them ... together?
A surfer rides the man-made Eisbach (Ice Brook) wave in Munich. It's been surfed since 1972, and officials made it legal to ride in 2010.
This thing is so ... extreme ... it deserves a second look.
Aluan Ricciardi from France rides the Superpipe during the Winter X-Games Europe in Tignes, France.
Greg Joyce hangs on to his shovel while shovel racing -- an annual event -- in Steamboat Springs, Colo.
Boating and icebergs, what's the worst that could happen?
Snowboarder Mark McMorris of Canada soars off a jump as he qualifies for the Winter X Games in Aspen, Colo.
Shaun White from the USA rides the Slopestyle at the Winter X-Games in Tignes, France.
Freestyle skiing is just slightly more extreme when you do it in front of the Battersea Power Station in London.
Reindeer racing at Lake Inari in Finland is so popular it's a yearly tradition.