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
John Hanning Speke the beginning, the relationship of Speke and Burton was one of opposites; Burton considered Speke inferior linguistically and a less experienced traveler in remote regions (which was partially true) but Burton himself appears to have been jealous and far less able to relate to the safari caravan to keep the expedition motivated and moving (a vital factor as they were completely dependent on their safari crew). While Speke enjoyed hunting and thus provided the caravan with meat, Burton was not much interested in such pursuits. Burton was appointed the head of the expedition and considered Speke the second in command,