Yosemite El Capitan free-climbers reach the top

Two US climbers have reached the summit of El Capitan in Yosemite National Park, California.

Kevin Jorgeson, 30, and Tommy Caldwell, 36, are the first climbers to do so without aids, except for harnesses and ropes to prevent deadly falls.

They began their ascent on 27 December 2014.

Alistair Leithead reports.