CNN Erin Burnett OutFront January 7, 2015 00:58:00
Climb yosemite's el captain without help to the top. this is the first time it's happened. for a day off, napping in a tent hanging off higher than the empire state building. definitely not a safe job for the sleepwalker. jeanne moos has more. >> reporter: don't look down don't look up. you are looking at climbers who have fallen. something called the don wall on the vertical rock formation el captain at yosemite national park. >> yesterday was day eight. >> reporter: it's easy to lose track of time when you're climbing a wall using your hands and feet finding min in thisuscule ledges using ho...
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