"The Sudd"@en . . "In the Sudd, the river flows through multiple tangled channels in a pattern that changes each year. Papyrus grows in dense thickets in the shallow water, which is frequented by crocodiles and hippopotami. Sometimes the matted vegetation breaks free of its moorings, building up into floating islands of vegetation up to 30 km in length. Such islands, in varying stages of decomposition, eventually break up. The sluggish waters are host to a large population of mosquitos and parasites that cause waterborne diseases. The Sudd is considered to be nearly impassable either overland or by watercraft. The early explorers searching for the source of the Nile experienced considerable difficulties, sometimes taking months to get through. In The White Nile, Alan Moorehead says of the Sudd, \"there is no "@en . . . . . . "In the Sudd, the river flows through multiple tangled channels in a pattern that changes each year. Papyrus grows in dense thickets in the shallow water, which is frequented by crocodiles and hippopotami. Sometimes the matted vegetation breaks free of its moorings, building up into floating islands of vegetation up to 30 km in length. Such islands, in varying stages of decomposition, eventually break up. The sluggish waters are host to a large population of mosquitos and parasites that cause waterborne diseases. The Sudd is considered to be nearly impassable either overland or by watercraft. The early explorers searching for the source of the Nile experienced considerable difficulties, sometimes taking months to get through. In The White Nile, Alan Moorehead says of the Sudd, \"there is no more formidable swamp in the world.\" There are three main waterways through the swamp; the Bahr al Zaraf (\"River of the Giraffes\"), the Bahr al Ghazal (\"River of the Gazelles\"), and the Bahr al Jabal (\"River of the Mountain\"), which is the main connection to the Mountain Nile."@en . .