In this programme three celebrities take on iconic longdistance hikes in some of the worlds most remote locations On this expedition expolitician Stanley Johnson TV presenter Melanie Sykes and German comedian Henning Wehn tackle Mexicos little explored but famous Copper Canyon It is a stunning wilderness in the heart of the Sierra Madre Mountains of north west Mexico Over the course of a week our trio experience an enticing challenge through difficult and remote terrain an unforgiving climate and unfamiliar culture They carve a route through breathtaking scenery endless steep valleys gorges and plateaux setting up camp each night