Climber, naturalist and explorer tom weir invites you to join him in another series of walks along the castle walls,perilous cliff sides, lochs and other landscapes that contribute to the life in scotland'. '.strtoupper('h')is intimate knowledge ofthe land, his enthusiasm and passion, inspires viewers around the world to this day., climber, naturalist and explorer tom weir invites you to join him in another series of walks along the castle walls,perilous cliff sides, lochs and other landscapes that contribute to the life in scotland'. '.strtoupper('h')is intimate knowledge ofthe land, his enthusiasm and passion, inspires viewers around the world to this day.special featuresnone listed.