That's right, below isn't a painting or some sort of fancy digital art made on one of them computer-things. Its an actual photograph taken in Namibia in a place called Naukluft Park. (here, google maps link -> http://bit.ly/jGQR18)
From the National Geographic post:
Tinted orange by the morning sun, a soaring dune is the backdrop for the hulks of camel thorn trees in Namib-Naukluft Park.
Source -> http://photography.nationalgeographic.com/photography/photo-of-the-day/camel-thorn-trees-namibia/