The San people (or Saan), also known as Bushmen or Basarwa, are members of various indigenous hunter-gatherer people of Southern Africa, whose territories span Botswana, Namibia, Angola, Zambia, Zimbabwe and South Africa. There is a significant linguistic difference between the northern people living between the Okavango River in Botswana and Etosha National Park in northwestern Namibia, extending up into southern Angola; the central people of most of Namibia and Botswana, extending into Zambia and Zimbabwe; and the southern people in the central Kalahari towards the Molopo River, who are the last remnant of the previously extensive indigenous San of South Africa.