Camel thorn tree (Acacia erioloba) and sand dunes in the evening in the Namib Desert, Namib-Naukluft National Park, Namibia, Africa

Sand dune in the Namib Desert, in the evening, Namib-Naukluft National Park, Namibia, Africa

Sand dunes covered with bushman grass (Stipagrostis sp. ), arid desert plains and isolated mountain ridges at the edge of the Namib Desert in the area of the exclusive Wolwedans safari camps, NamibRand Nature Reserve, Namibia, Africa

Sand dunes covered with bushman grass (Stipagrostis sp. ), arid desert plains and isolated mountain ridges at the edge of the Namib Desert, the trees are Camel thorn trees (Acacia erioloba), NamibRand Nature Reserve, Namibia, Africa

"Namib Desert and the Atlantic Ocean, aerial view, Namib-Skeleton Coast National Park, near Walvis Bay, Namibia, Africa"

Shadow of a hot-air balloon in the Namib Desert, photographed from the basket of the balloon, Namib-Naukluft National Park, Namibia, Africa

Dust trails left by vehicles driving on gravel roads at the edge of the Namib Desert, photographed from a hot-air balloon, Namib-Naukluft National Park, Namibia, Africa

Tourists having fun at Dune 45 in the Namib Desert, Namib-Naukluft National Park, Namibia, Africa

Aerial view from a hot-air balloon at the edge of the Namib Desert, Fairy Circles, circular patches without any vegetation which according to recent scientific studies are caused by termites, NamibRand Nature Reserve, Namibia, Africa

Sand dunes, Sossusvlei, Namib Desert, Namib Naukluft Park, Namibia, Africa

Sand dunes, Sossusvlei, Namib Desert, Namib Naukluft Park, Namibia, Africa

Sand dunes, Sossusvlei, Namib Desert, Namib Naukluft Park, Namibia, Africa

"Sand dune, Sossusvlei, Namib Desert, Namibia, Africa"

Sand dunes, Sossusvlei, Namib Desert, Namib Naukluft Park, Namibia, Africa

Sand dunes, Sossusvlei, Namib Desert, Namib Naukluft Park, Namibia, Africa

"Sand dunes, Namib, Hardap Region, Namibia, Africa"

Sand dunes, Sossusvlei, Namib Desert, Namib-Naukluft National Park, Namibia, Africa

Sand dunes, Sossusvlei, Namib Desert, Namib-Naukluft National Park, Namibia, Africa

Sand dunes, Hidden Vlei, Namib Desert, Namib Naukluft Park, Namibia, Africa

"Sand dunes, Sossusvlei, Namib Desert, Namib-Naukluft National Park, Namibia, Africa"

"Sand dunes, panorama, Sossusvlei, Namib Desert, Namib-Naukluft National Park, Namibia, Africa"

"Sand boarding in the dunes of the Namib Desert, near Swakopmund, Namibia, Africa"