Major explorations after the Age of Discovery to locate the source of the River Nile. Expeditions by Burton and Speke (1857–1858) and Speke and Grant (1863) located Lake Tanganyika and Lake Victoria. It was eventually proved to be the latter from which the Nile flowed. Explorers were also active in other parts of the continent. Southern Morocco, the Sahara and the Sudan were traversed in many directions between 1860 and 1875 by Georg Schweinfurth and Gustav Nachtigal. These travellers not only added considerably to geographical knowledge, but obtained invaluable information concerning the people, languages and natural history of the countries in which they sojourned. Among the discoveries
PS Speke "Speke" and her barges were used mainly to carry cotton for export from nearby plantations. When the railway operator's successor, the East African Railways and Harbours Corporation (EARH), completed its northern Uganda extension from Tororo to Pakwach it superseded the Victoria Nile ferry service. EARH withdrew "Speke", "Stanley" and "Grant" from service in 1962 and offered "Speke" for sale in September of that year. The track of the Busoga Railway was lifted in 1964. PS Speke PS "Speke" was a British stern wheel paddle steamer in Uganda. She was built for the Uganda Railway in 1910 to operate on Lake