Watch on Soap2day. "The last of three films by Sid Perou that trace the story of rock climbing from its simple and accessible beginnings to the exclusive world of today's dedicated rock athlete. In this episode of Rock Athlete, Ron Fawcett puts on an epic first ascent on the famous 'Cromlech' in the Llanberis Pass of North Wales. His phrase 'Come on arms!' became a climbing catch-phrase after the film was transmitted. A TV series by Sid Perou produced by the BBC."