Kuiseb River Separating Sandy Southern Namib from Rocky Northern Namib Desert – February 26th, 201123.5S 15.0E
The Namib Desert occupies an area of around 80,900 km² (31,200 square miles), stretching from the Usiab River (north) to the town of Lüderitz (south) and from the Atlantic Ocean (west) to the Namib Escarpment (east).
Southern Namib (between Lüderitz and the Kuiseb River) comprises a vast dune sea with some of the tallest and most spectactular dunes of the world, ranging in color from pink to vivid orange.
Moving north from Sossusvlei, the sand gradually gives way to a rocky desert that extends all the way from Sossusvlei to the Swakop River.
The dividing line between the southern and northern parts of the desert is clearly visible near the top of this image. There, the Kuiseb River appears as a green line separating the ridges of the orange sand dunes to the south (observable in great detail in the full image) from the flatter, rocky desert to the north.