The Northern Cape is the largest and most sparsely populated province of South Africa. It was created in 1994 when the Cape Province was split up. Its capital is Kimberley. It includes the Kalahari Gemsbok National Park, part of the Kgalagadi Transfrontier Park, an international park shared with Botswana. It also includes the Augrabies Falls and the diamond mining regions in Kimberley and Alexander Bay. The Namaqualand region in the west is famous for its Namaqualand daisies. The southern towns of De Aar and Colesberg, in the Great Karoo, are major transport nodes between Johannesburg, Cape Town and Port Elizabeth. In the northeast, Kuruman is known as a mission station and also for its artesian spring, the Eye of Kuruman. The Orange River flows through the province, forming the borders with the Free State in the southeast and with Namibia to the northwest. The river is also used to irrigate the many vineyards in the arid region near Upington.