How mountaineer Jim Morrison made the first skiing descent of Everest's most dangerous route

Mountaineer Jim Morrison hopped left on his skis, sending trickles of snow down a sheer gully on the North Face of Mount Everest, then he hopped to the right, his breath heavy in the oxygen-thin air.

Below him plunged 9,000 feet (2,700 meters) of snow, ice and rock — the most merciless ski run on planet Earth.