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 boundaries of the South African Republic (the Transvaal Republic). The South African Republic subsequently became the Transvaal Colony and then part of the Union of South Africa, while north of the Limpopo Matabeleland became part of Southern Rhodesia which became Zimbabwe. There is a single crossing at Beit Bridge, where the South African N1 highway and the Zimbabwean A6 highway are joined by the Alfred Beit Road Bridge. A separate bridge carries a railway line, which is connected to Pretoria in South Africa and to Rutenga and Bulawayo in Zimbabwe. South Africa–Zimbabwe border The border between South Africa and Zimbabwe