Wolfberg Cracks, Cederberg, South Africa
"The sport that is 'extreme ironing' is an outdoor activity that combines the danger and excitement of an 'extreme' sport with the satisfaction of a well pressed shirt. It involves taking an iron and board (if possible) to remote locations and ironing a few items of laundry. This can involve ironing on a mountainside, preferably on a difficult climb, or taking an iron skiing, snowboarding or canoeing."
http://www.extremeironing.com/index.php