The River Used to Be a Man (2011)

A young German travels in Botswana. On the banks of a river, he meets an old fisherman who takes him deep into the wilderness in his wooden boat. The next morning, he finds himself alone in a seemingly endless river delta. After days of wandering, he arrives in a village far from civilisation, but his odyssey never ends. More and more, he loses control in the impassability of a foreign culture.