<p>On 14 June 1990, at Raven Tor in the Derbyshire Peak District, twenty-four-year-old Ben Moon squeezed his feet into a pair of rock shoes, tied in to his rope, chalked his fingers and pulled on to the wickedly overhanging, zebra-striped wall of limestone. Two minutes later he had made rock-climbing history with the first ascent of Hubble, now widely recognised as the world's first F9a. Born in the suburbs of London in 1966, Moon started rock cl...