Caught on Tape: Female Daredevil Over Yosemite

The Moab Monkeys balance on a thin nylon wire in amazing videos.
2:02 | 08/13/13

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Transcript for Caught on Tape: Female Daredevil Over Yosemite
And now, we bring you the jaw-dropping video we've been showing you of women slacklining. Get this, thousands of feet in the air. The pictures of them defying gravity have gone totally viral. And abc's cecilia vega has their story. Reporter: Some call them daredev daredevils. Others call them fearless. But this might be just crazy. They are the moab monkeys. And they're 3,000 feet above yosemite park, balancing on a thin fire. It's called slacklining. You feel like the king of the world. You set your goals. And when you achieve your goal, it's the best feeling. Reporter: The group has traveled the world in search of the most exotic locations. Places where they have their heads in the clouds, their hands in the air, dangling by their ankles and downright showing off. They've now conquered yosemite, rio this winter. And this morning, theycy their next stop is switzerland. Adrenaline junkies? You betcha. You can just relax and smile, you'll make it to the end. Reporter: The only thing separating them from a 3,000-foot fall to the ground, this harness. That and years of training. They say it's safe. Most of the fear is the primal instinct not to step over the abyss. But you're safe. Reporter: And because making it to the other side, one steady step at a time, isn't enough for the wire-huggers, they like to throw in a few moves. Like this one, the double-drop. Or the splits. It's mind-blowing. And beautiful and amazing. And when you walk, it's this experience that's almost hard to describe. Incomparable. Reporter: Whatever it is, kids, don't think about trying this at home. For "good morning america," cecilia vega. We've recruited ginger to do

This transcript has been automatically generated and may not be 100% accurate.

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