Great Escarpment which edges the central plateau. The eastern portion of this line, coloured red, is the Drakensberg. The Escarpment rises to its highest point, at over , where the Drakensberg forms the border between KwaZulu-Natal and Lesotho. None of the regions indicated on the map has a well-defined border, except where the Escarpment or a mountain range forms a clear dividing line between regions. Some of the better-known regions are coloured in; their names simply indicate the others.