Botswana–South Africa border

[2] The western terminus of the border is at the tripoint with Namibia, located where the Nossob River crosses the 20th meridian east.

[2][3] From Ramatlabama the border turns northwards, and is made up of a series of straight lines through beacons at Matlhase, Sebataole, Schaapkuil and Pytlanganyane to Sengoma on the Ngotwane River.

[3] The Order in Council authorising the annexation also extended the border northwards to include the land between the Molopo and the Nossob River,[2] which is now the Mier area and the South African section of the Kgalagadi Transfrontier Park.

[2] These conventions settled the bounds of the ZAR, which subsisted until it was annexed to the British Empire during the Second Anglo-Boer War, becoming the Transvaal Colony.

Thence up the course of the Marique River to "Derde Poort," where it passes through a low range of hills, called Sikwane, a beacon (No.

[3]The border has a large number of official crossings, the most important of which are Skilpadshek/Pioneer Gate on the Trans-Kalahari Corridor and Ramatlabama on the road and railway from Mahikeng to Gaborone.