Aerialist Nik Wallenda successfully walked a quarter mile on a tightrope over the Little Colorado River Gorge in northeastern Arizona Sunday.
Wallenda performed the stunt on a 2-inch-thick steel cable, 1,500 feet above the river, with no tether.
It took a little more than 22 minutes.
The 34-year-old is a seventh-generation member of the famous "Flying Wallendas" circus family.
Watch the beginning and end of the stunt below: