In this four-part BBC documentary, former Monty Python funnyman and renowned globe-trotter Michael Palin sets off from Gibraltar to travel across the Sahara, his witty humor downplaying the hardships he faces along the arduous journey. He travels to Morocco, Mauritania, Mali and beyond, across some of the harshest terrain on the planet. Episodes include "A Line in the Sand," "Destination Timbuktu," "Absolute Delight" and "Dire Straights."