BIU PLATEAU

highlands in northeastern Nigeria, covering an area of approximately 2,000 square miles (5,200 square km) with an average elevation of 2,300 feet (700 m). Its highest point is Wiga Hill (2,693 feet ), and its most prominent relief features are the many well-defined, extinct volcanic cones. Numerous tributaries of the Gongola Riverincluding the Hawal, Ruhu, Gungeru, and Ndivana riversrise on the plateau and deeply dissect its surface. While Biu's southern and western sides are quite steep, the plateau slopes more gradually in the north onto the Bauchi Plains and the Chad Basin. The Biu Plateau's thin soils, scarcity of water in the dry season, and relative inaccessibility have discouraged human settlement there. Most of its upland areas were first settled in the early 19th century by non-Muslim groups trying to escape the ravages of the Fulani jihad (holy war). The plateau's Bura (Pabir) inhabitants are almost entirely non-Muslim. The tsetse-free plateau has lured some Fulani cattle herdsmen and has provided grazing ground for its local peoples' dwarf cattle, horses, donkeys, goats, and sheep. Sorghum and peanuts (groundnuts) are the chief crops cultivated by these subsistence farmers. Biu town is the plateau's largest settlement and its principal trade centre.