Lynn Hill, First Person to Free Climb El Capitan, Relives Crazy Moment 20 Years Later

Incredible videos of rock climbers base jumping in Yosemite National Park are something to see.

Read: Teen Dangling Off Cliff Calls Mom 1,500 Miles Away For Help.

Rock climber extraordinaire Lynn Hill is featured in a new Discovery Channel documentary Valley Uprising.

Hill earned the title of living legend in 1993 when she became the first person, male or female, to free climb what's known as the nose on El Capitan in Yosemite National Park.

Hill told INSIDE EDITION, "It had been an objective of so many people for so long, and it hadn't been done, and I was really proud to be a woman."

Climbing the cliff is no easy task. Hill explained, "It's glacial polished granite and the edges are very small. It requires a lot of coordination and strength."

More than 20 years later, there's only been one other person who's completed an all-free ascent of the nose in one day.

Watch: How Did This Mysterious Piano End up on Top of a Malibu Cliff?

The documentary premieres Saturday at 8pm ET/PT on Discovery.