Famous high-wire walker reveals next big stunt

Daredevil Nik Wallenda shares exclusively with “GMA” that his next high-wire walk will take place over a volcano.
4:04 | 01/14/20

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Transcript for Famous high-wire walker reveals next big stunt
We are back now with famed daredevil NIK Wallenda joining us exclusively to announce the location of his next high-wire walk. He says it will be his most dangerous one yet. We'll speak with him this just a moment but Paula Faris is here with a look at the death-defying stunts he's already pulled off. We'll watch like this. NIK Wallenda has claimed 11 guinness world records. He's crossed the grand canyon and niagara falls, even blindfolding himself on feats. Watching his stunts, not for the faint of heart. If you can make it in new York you can make it anywhere. A death-defying walk 25 stories above times square. So much blood, so much sweat. And more tears than I've ever put into another walk. Reporter: 1800-foot trek over the raging waters of the niagara falls. Oh, my gosh. It's an unbelievable view. Reporter: Teetering without a safety harness over the grand canyon. Winds are way worse than I expected. Reporter: These are the stunts that have earned NIK Wallenda the nickname the king of the wire. You guys watching think I'm crazy. This is what I was made for. Reporter: But for Wallenda, the risky walks are in his DNA. He is a seventh generation wire walker from the famed flying wallendas. Now Wallenda is bracing for a new explosive stunt. Taking his show to one of the most volatile and dangerous locations on Earth. It is in his blood, in his DNA. He's known this is his passion since age 2 when he first stepped onto a high-wire. Now the king of the high-wire is ready to announce his latest stunt. He will be bringing the heat. Oh, come on now. Let him do it. NIK joins us now. You were right outside this window last time we saw you. What's up next. On March 4th live on ABC I'm going to become the first to walk a wire directly over an active volcano. Come again. That's right, an active volcano. It has been a dream of pine for a long time. And, of course, I live my life about trying to inspire others. Right, right. In order to do that I have to push myself beyond my comfort zone and that's what I'm doing. What particular volcano? It is a volcano in Nicaragua. It is called messiah volcano and the reason I chose it, because as I searched for volcanos this one was one of the very few that has an active lava lake although as we know from the news more and more are becoming active. In the Philippines. What precautions do you have to take? It's immense. Everything itch's ever done times ten so in niagara falls I faced the blinding mist of the falls themselves and the intimidating roar of the falls. I'm facing gases, sulfuric gases that are so thick you can't breathe through them so part of my training is training with a gas mask. You can't even see the other side so part of my train something training blindfolded because there is a great chance I won't be able to see. On the set we will have infrared cameras in case you can't see me with the naked eye during the walk. Other precautions. Training for distance, not only the volcano but longest walk attempted. Highest walk, higher than one world trade center, the highest sayscraper in New York City so this is truly the greatest challenge I've faced. How do you come up with this? I mean -- You know, it's funny. My family has done this for a couple hundred years. It is my life. My great-grandfather said life is on the wire. Everything else is just waiting. In the middle of night I'll have dreams like, hey, it would be pretty amazing to walk between the pifr mids in Egypt or walking between the tallest skyscrapers in the world or over times square or over an active Since the age of 2, is it true -- My mom was 6 months pregnant with me and walking the wire so longer than I've been walking -- Oh, well, please take care and thank you for sharing that with us and just hope that everybody in your family is doing well. Thank you so much. Thank you, NIK. See the two-hour event March 4th starting at 8:00 P.M. Eastern right here on ABC.

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

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