Cities such as Upington, Bethulie, and Prieska are on its banks. After passing over Augrabies Falls, it flows through Little 
Cities such as Upington, Bethulie, and Prieska are on its banks. After passing over Augrabies Falls, it flows through Little Namaqualand into Alexander Bay. Much of its silt is composed of (*) Drakensberg lava. Its main tributary is the Vaal, and it originates in Lesotho. For 10 points— name this river which marks the southern extent of the Kalahari and separates South Africa from Namibia.
Cities such as Upington, Bethulie, and Prieska are on its banks.
Orange River