Only 118 people in history have ever climbed all seven of world’s highest summits. Erik Weihenmayer is one of them – except he’s done it blind.

How does he scale such treacherous peaks? Amazing new technology allows camera images to be fed through wire and translated into vibrations through a mouth sensors that tickles Erik’s tongue. The patterns formed by this mouth sensors allow Erik to gain a sense of the space around him. And therefore climb rock faces.

Alongside being the only blind person to ever climb Mt. Everest, Erik enjoys paragliding, kayaking, skiing, cycling and even solo skydiving. Unbelievable.