Eastern Zambia shows great diversity. The Luangwa Valley splits the plateau in a curve north-east to south-west, extended west into the heart of the plateau by the deep valley of the Lunsemfwa River. Hills and mountains are found by the side of some sections of the valley, notably in its north-east the Nyika Plateau () on the Malawi border, which extend into Zambia as the Mafinga Hills, containing the country's highest point, Mafinga Central ().