Make room on your memory cards before you head out on a trip to Sossusvlei, Namibia’s most dramatic landscape. Ideal for moody, high-contrast photographs, the sand dunes of the Namib Desert ebb and flow among the dry marshes and riverbeds, punctuated by petrified trees. Colors range from misty white clay to glowing deep-red dunes as tall as mountains. On a sightseeing plane ride, you can take in other wonders as well, including lagoons, salt mines and the Sperrgebiet diamond mines. In this arid biodiversity hot spot, a desert tour allows you to climb up a dune and see the birdlife up close.