In early 1978, an extraordinary new invention for rock climbers was featured on the BBC television science show Tomorrow's World. It was called the 'Friend', and it not only made the sport safer, it helped push the limits of the possible. The company that made them was called Wild Country, the brainchild of Mark Vallance. Within six months, Vallance was selling Friends in sixteen countries. Wild Country would go on to develop much of the gear that transformed climbing in the 1980s. Mark Vallance's influence on the outdoor world extends far beyond the company he founded. He owned and opened...