Extreme skiing is skiing performed on long, steep (typically from 45 to 60+ degrees, or grades of 100 to 170 percent) slopes in dangerous terrain. The sport is performed off-piste. Extreme skiing as an English term has changed since the 80s when the term "extreme skiing" was coined to now be classified under Big Mountain skiing or Freeskiing which encompasses all aspects and methods of descending off-piste terrain.

Check out the video of Rex and Shane in action on YouTube - rexpem.