Zambia 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 (). The Muchinga Mountains, the watershed between the Zambezi and Congo drainage basins, run parallel to the deep valley of the Luangwa River and form a sharp backdrop to its northern edge, although
South Africa–Zimbabwe border South Africa–Zimbabwe border The border between South Africa and Zimbabwe is long, and follows the median line of the Limpopo River. The western tripoint with Botswana is located at the confluence of the Shashe River with the Limpopo. The location of the eastern tripoint with Mozambique is not entirely certain; it is situated either at the confluence of the Luvuvhu River with the Limpopo, or at a point nearby in the Limpopo defined by beacons on the Mozambique–Zimbabwe border. The border was established by the Pretoria Convention of 1881 and restated by the London Convention of 1884 which defined the