Five very scary ski runs
If you're fit, experienced and have really good health insurance, consider making a winter run down one of America's five scariest black diamond ski runs.
ON THE EDGE: A view from the edge of Corbet's Couloir in Jackson Hole, Wyo. When you push off to begin this run, you push off into a 20-foot freefall. (Photo: trpnblies7/Flickr)
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