This high wire dare devil is taking on his greatest and perhaps most dangerous stunt: crossing an active volcano! Nik Wallenda has crossed Times Square, the Grand Canyon, and Downtown Chicago. Now, he will walk across the Masaya Volcano in Nicaragua. It will be his longest and, at 1,800 feet, highest high wire crossing ever attempted! The event will be broadcast on live TV, and Nik admits he’s a little scared! “Every walk I do there's a respectful fear,” he said.