Lake, central Africa.
Located on the boundary between Tanzania and Congo (Kinshasa), it is the longest freshwater lake in the world, 410 mi (660 km) long, and the second deepest, 4,710 ft (1,436 m) deep. Fed by several rivers, it tends to be brackish. Oil palms and rice grow along its steep shores; hippopotamuses and crocodiles abound. It was first visited by Europeans, searching for the source of the Nile , in 1858.