For his final tour, Paul Murton goes over the sea to Skye, where he visits the home of writer and naturalist Gavin Maxwell, before scaling the famous Cuillin mountain, Am Basteir. On the nearby Isle of Raasay he learns the amazing true story of the crofter Calum Macleod, who between 1964 and 1974 singlehandedly built a road to connect his isolated community