Alex Honnold explains what would happen if he falls during live free solo of Taiwan skyscraper on Netflix

Alex Honnold is preparing to put his life on the line as he attempts his most perilous free solo ascents yet — this time on one of the world’s tallest skyscrapers.

Without safety ropes or gear, the professional rock climber, 40, known for completing similarly dangerous stunts, will try his hand at scaling Taipei 101, a 1,667-foot-tall tower located in Taiwan’s capital.

Speaking to CNN ahead of his daring climb, which will be streamed live Friday on Netflix, Honnold confirmed that were he to fall, it would likely be fatal.

“If something happens, I would die, though actually, on this particular building, that’s not even totally true because there are balconies every few floors,” he said of the 101-storied building. “The geometry of the building, the shape of the building is such that you actually could fall in tons of places and not actually die, which makes it in some ways safer than a lot of rock-climbing objectives.”

Built in 2004, the skyscraper features mostly glass curtain walls, with balconies near the top that taper to a pointed peak. It was once the world’s tallest building until the construction of Dubai’sBurj Khalifa in 2010, which stands at a staggering 2,717 feet.

“I think the hardest part of the climb will be what we’re calling the bamboo boxes, which are eight segments in the middle of the building that are overhanging,” Honnold previously explained to Netflix’s Tudum.

“Each one is eight floors, so it represents 64 floors in the middle of the building, and they’re all the same. They overhang, I don’t know, 10 or 15 degrees — it’s kind of steep — and then there’s a balcony every eight floors... The boxes are definitely the most physically demanding part.”

In a recent trailer for Skyscraper Live, Honnold’s wife, Sanni McCandless, acknowledged people’s concerns about her husband free-soloing now that he’s a father to two young children. “This is who Alex is,” McCandless said.

Honnold rose to global fame in 2017 when he became the first person to free solo a full route on El Capitan in Yosemite National Park. His accomplishment was the subject of the 2018 Oscar-winning documentary Free Solo.

Despite being considered one of the world’s greatest climbers, Honnold still has some apprehension toward his next feat.

“I’m sure I’ll feel a little nervous at the bottom, just because it’s something totally new and I don’t know how it’s going to feel,” he added to Tudum. “I’ve spent 30 years climbing rock faces; this is going to be my first big handmade structure, so I’m sure it’ll feel a little different.”

As to whether he is nervous about performing the death-defying stunt with millions watching, Honnold admitted that aspect was not at all concerning.

“Just because the feeling of being witnessed is nothing compared to the feeling of trying to do something challenging and do it well,” he said. “My life is on the line — I don’t really care who’s watching. I care about doing what I’m doing and doing it well.”

Skyscraper Live will stream Friday at 8pm E.T./ 5pm P.T. on Netflix.