BASE Jumping, Yosemite
Photograph by Lynsey Dyer
Leaping from Half Dome is illegal, but in Yosemite the sport of BASE jumping is soaring in popularity anyway. Climbers say it's faster (and more fun) to parachute into the valley than to hike all the way down the back of the mountain.
See more pictures from the May 2011 feature story "Daring. Defiant. Free."