Drakensberg; Death of a Bushman (2002) on the murder of San tracker Optel Rooi by South African police; The Will To Survive (2009), which covers the history and situation of San communities in southern Africa today; and My Land is My Dignity (2009) on the San's epic land rights struggle in Botswana's Central Kalahari Game Reserve. A documentary on San hunting entitled, The Great Dance: A Hunter's Story (2000), directed by Damon and Craig Foster. This was reviewed by Lawrence Van Gelder for the New York Times, who said that the film "constitutes an act of preservation and a requiem". Spencer Wells's 2003 book The Journey of Man—in connection with National Geographic's Genographic Project—discusses a genetic analysis of the San and asserts their genetic markers were the first ones to split from those of the ancestors of the bulk of other Homo sapiens sapiens. The PBS documentary based on the book follows these markers throughout the world, demonstrating that all of humankind can be traced back to the African continent (see Recent African origin of modern humans, the so-called "out of Africa" hypothesis). The BBC's The Life of Mammals (2003) series includes video footage of an indigenous San of the Kalahari desert undertaking a persistence hunt of a kudu through harsh desert conditions. It provides an illustration of how early man may have pursued and captured prey with minimal weaponry. The BBC series How Art Made the World (2005) compares San cave paintings from 200 years ago to Paleolithic European paintings that are 14,000 years old. Because of their similarities, the San works may illustrate the reasons for ancient cave paintings. The presenter Nigel Spivey draws largely on the work of Professor David Lewis-Williams, whose PhD was entitled "Believing and Seeing: Symbolic meanings in southern San rock paintings". Lewis-Williams draws parallels with prehistoric art around the world, linking in shamanic ritual and trance states. Films and music A 1969 film, Lost in the Desert, features a small boy, stranded in the desert, who encounters a group of wandering San. They help him and then abandon him as a result of a misunderstanding created by the lack of a common language and culture. The film was directed by Jamie Uys, who returned to the San a decade later with The Gods Must Be Crazy, which proved to be an international hit. This comedy portrays a Kalahari San group's first encounter with