Clare Balding walks near Arundel in West Sussex with Tristan Gooley.
Tristan Gooley is the self-styled 'Natural Navigator' who makes his living teaching people how to orient themselves by using clues and signs within the landscape.
On today's Ramblings he takes Clare on one of his favourite walks, near Arundel in West Sussex. En route they take their bearings from the most fascinating and unlikely natural sources, and Clare hears where Tristan's passion for the outdoors began at the age of 10, on a sailing course on the Isle of Wight, and how that eventually led to his current career.
Tristan is an adventurer and explorer who has led expeditions across five continents. He's the only living person to have both flown solo and sailed singlehanded across the Atlantic.