Some times of day it looks distinctly orange. The Namib desert, which stretches along the Atlantic coast of Namibia as far as south-west Angola is thought to be one of the oldest deserts in the world, beaten only by the Atacama desert in Chile. (The Namib desert does come first in one respect, though, having the tallest sand dunes in the world). 
Over 1200 miles in length, but only 50 to 80 wide, the desert offers such a stable environment that it helped to create what Charles Darwin was to describe as "the platypus of the plant world", the welwitschia myrabilis - other animals and birds have also evolved and adapted to survive the climate - with annual rainfall so low, many animals rely on Atlantic fogs to gain sufficient moisture. Some mammals tend to come out in darkness, when the air has cooled so that they lose less liquid, although quite bizarrely, on the very edges of the desert, there are a number of elephants.  

For more desert images go here, or click this link for a list of accommodation options in, or near, the desert.