Union's End is the northwesternmost point in South Africa and the northernmost point of the Northern Cape as well as of Dawid Kruiper Local Municipality and ZF Mgcawu District Municipality within this province.
It is the point where the borders of South Africa, Namibia, and Botswana intersect.
Where the Nossob River flowing from the northwest (from Gobabis, Leonardville, and Aranos) crosses the 20th meridian of longitude east of Greenwich (the eastern border of Namibia), the tripoint lies in the middle of the dry riverbed.
It is located in Kgalagadi Transfrontier Park, where beacons indicate the borders with Botswana and South Africa.
A picnic table, information board (under a reed-thatched roof) and more directions can be found at 24°45′55.3″S 19°59′58.7″E.