'The Sahara embodies scale and mystery, the thin line between survival and destruction, the power to take life or to transform it . . .' Of all Michael Palin's epic voyages, this may be his greatest ever challenge: crossing the vast and unforgiving Sahara Desert. From the westernmost point of Senegal to Libya's Mediterranean beaches, Sahara is a journey full of beauty, excitement, danger - and plenty of camel stew.