Stephen Belcher / Camelthorn Acacia (Acacia erioloba) dead tree with dunes in background, Namib-Naukluft National Park, Namibia

Stephen Belcher / Sand dunes, Namib-Naukluft National Park, Namibia

Jouan & Rius / Ripples in the sand dunes, Namib-Naukluft NP, Namib desert, Namibia

Jouan & Rius / Nara melons (Acanthosicyos horrida) on sand dune, Namib Naukluft NP, Namib desert, Namibia

Jouan & Rius / Welwitschia (Welwitchia mirabilis), Namib Naukluft NP, Namib desert, Namibia

Jouan & Rius / Aerial view of Tsauchab valley, Namib Naukluft NP, Namib desert, Namibia

Richard Du Toit / Gemsbok (Oryx gazella) running, Namib-Naukluft National Park, Namibia

Richard Du Toit / Thick-tailed Scorpion (Buthidae) walking on sand dune and casting a shadow, Namib-Naukluft National Park, Namibia

Gerry Ellis / Star dune formations, Namib-Naukluft National Park, Namibia

Gerry Ellis / Aerial view of star dune formations, Namib-Naukluft National Park, Namibia

David Noton / Sand dunes in the Namib-Naukluft NP, Namib desert, Namibia, Southern Africa

David Noton / Sand dune base and tree. Namib-Naukluft NP, Namib desert, Namibia, Southern Africa