David Livingstone (1813-1873), Scottish missionary and explorer of Africa. His career can be split into four distinct parts: the early missionary explorations during which he travelled into the Kalahari region, discovered Lake Ngami, and demonstrated that the Kalahari could be crossed by oxen and wagons (1841-1849); the expedition from Angola to Mozambique during which he discovered and named the Victoria Falls on the Zambezi River (1850-1856); the explorations along the Zambezi River (1858-1864); and his unsuccessful search for the source of the Nile River during which he disappeared but was found in 1871 by Henry Morton Stanley on Lake Tanganyika (1866-1873).