Nik Wallenda To Wire-Walk Across Grand Canyon

The self-proclaimed "King of the High Wire", Nik Wallenda, has announced his latest daring stunt - a tightrope walk over a section of the Grand Canyon without a harness.

Wallenda, 34, will be higher than he has ever been before at 1,500ft (457m) above the Little Colorado River.

The daredevil said his latest attempt is a chance to honour his great-grandfather, Karl Wallenda, who died after falling from a tightrope in Puerto Rico in 1978.

The tightrope crossing will take place on June 23 in a remote section of the Grand Canyon operated by the Navajo Nation Parks and Recreation.

In June 2012 Wallenda became the first person in 116 years to walk across the Niagara Falls on a high wire.