Nik Wallenda poses for a photograph with a piece of the high wire he used to walk over Niagara Falls on at Circus Sarasota on February 15, 2013 in Sarasota, Florida. Wallenda is planning to walk on a high wire over the Grand Canyon this summer. (Photo by Tim Boyles/Getty Images)
Sarasota, FL -- It's an ambitious feat even for a man who was born into a family of daredevils.
Nik Wallenda will attempt to walk on a tightrope across the Little Colorado River Gorge near the Grand Canyon -- without a tether or net -- on Sunday.
`Skywire Live with Nik Wallenda' will be broadcast live on the Discovery Channel on Sunday, June 23 at 8 p.m. EDT/5 p.m. PDT.
Wallenda, who is 34, has been training for weeks for the stunt in his hometown of Sarasota.
The circus performer, acrobat and heir to the famed Flying Wallendas circus family, says he isn't afraid of walking a quarter mile across the gorge. He says one of the perks of the stunt is that he can enjoy the aerial view of the Little Colorado.
Read: Nik Wallenda Conquers Walk Across Niagara Falls