Staying on the subject of skiing...WebTwitcher has stumbled upon a selection of examples from the world of those who like to push the limits. When skiing the black run is no longer a challenge, why not head off to you local Chilean volcano and try skiing down the ash?
When off piste from a helicopter fails to get the adrenaline pumping, there's only one way forward. Extreme ironing.
Thanks to extreme skiiers Christian Retscher and Alexander Rauscher for the stunning photo: Ash on Snow.