Daredevil Nik Wallenda completes high-wire walk across Grand Canyon LITTLE COLORADO RIVER, Arizona (Reuters) - Daredevil Nik Wallenda completed a historic high-wire walk over a section of the Grand Canyon on Sunday, greeted with wild cheers after finishing his journey over the yawning chasm on a 2-inch (5-cm) steel cable. Wallenda, the self-described "King of the High Wire," walked 1,400 feet across the crimson-hued canyon with just the distant ribbon of the Little Colorado River beneath him. The event was broadcast live around the world. Reporting by Tim Gaynor; Editing by Stacey Joyce