In the world of extreme sports, the more life threatening, the better. And speed flying is no exception.
"Riders are usually dropped off by helicopter on top of legendary crags like Switzerland's 13,000-foot The Eiger, or they climb Mont Blanc, Europe's highest point at nearly 15,800 feet. Folks have been known to try it out in Colorado, New Zealand, Russia, and South America, too.
Riders can reach speeds over 90 miles per hour; descending from the top of Mont Blanc to the valley floor in Chamonix, 12,000 feet below takes about 10 minutes.
Of course this all comes at a high price. No one died at the 2010 Swiss Speed Flying Championship last month, fortunately.But last year, the sport killed 9 people -- that's a lot for a pastime that maybe a few hundred adrenaline junkies participate in world wide."
Check out the selection of speed flying videos in the gallery below.