The Lost Elephants of Timbuktu

David Attenborough narrates this documentary following young research student Anne Orlando as she sets out on an unforgettable adventure, hoping to solve the mysteries surrounding a herd of elephants that inhabit the desert south of the fabled city of Timbuktu. How do they survive the arid conditions? Why do they disappear for two months each year? And why do they make an annual journey across the desert?