Tightrope walker who tackled Grand Canyon dies

Climber Dean Potter dies in Yosemite BASE jump attempt

Nik Wallenda - Wikipedia

Tightrope Walker Nik Wallenda Successfully Crosses the Grand

Bizarre Things That Happened At The Grand Canyon

Man to walk tightrope over active volcano, The Independent

Chasing the Ghost, Wallenda Story

Tightrope walk planned near Arizona's Grand Canyon

Nik Wallenda attempts to cross the Grand Canyon on a tightrope

Nik Wallenda makes tightrope walk over gorge near Grand Canyon

Nik Wallenda's Risky Stunt for Discovery Channel Points to TV's

900 Feet Up With Nowhere to Go but Down - The New York Times