Climber Jim Whittaker retraces historic Everest ascent
2 May 2013 Last updated at 01:28 BST
On May 1, 1963, Jim Whittaker climbed into history, becoming the first American to reach the highest point on Earth - the summit of Mount Everest.
Fifty years later, he is still one of the most highly regarded mountaineers of all time.
Last year, at the age of 83, he returned to the mountain with his family.
Now aged 84, he looks back at his historic climb and the perspective he gained from standing at 29,000ft (8,848m).
Produced by Ashley Semler and Bill McKenna
Special thanks KPTZ radio