What happened next has become the stuff of mountaineering legend.
The saga of the five days that followed is one of the most remarkable and inspiring survival stories ever. It's also an extraordinary example of self-reliance, decision-making under extreme duress, and force of will.
One of the climbers, Joe Simpson, wrote a book about the experience called Touching The Void. In 2003, the story was made into a docu-drama directed by Kevin Macdonald. The movie was narrated by Simpson and Yates, with actors re-enacting the events in Peru and the Alps.