evidence: The Orange River, known as "eGariep" to the Bushmen and "die Grootrivier" too early explorers, is a significant geographical feature of South Africa. Despite common misconceptions, its name isn't derived from its color. Instead, it was named "Oranjerivier" in 1777 by Robert Jacob Gordon, a Dutchman of Scottish descent, to honor Prince William of the Royal Dutch House of Orange. [...] The Orange River forms international borders between South Africa and Namibia, South Africa and Lesotho, as well as several provincial borders within South Africa. Despite not passing through any major cities, it plays a crucial role in the South African economy by supporting agriculture, industry, and mining. [...] The Orange River is a popular destination for River Run adventures in South Africa, offering thrilling yet safe river trails. Rapids along the stretch between Noordoewer and the Fish River Junction reach a grade of 2 to 2.5 (graded between 1 and 6, from gentle to impossible).