The so-called “star dunes” of Sossusvlei in the Namib #Desert, which feature limbs of #sand extending out like points of a #star, form when the #wind #blows from different directions. Sossusvlei, whose name combines Nama and Afrikaans words to mean “dead-end marsh,” is a #salt and #clay pan that prevents the flow of Namibia’s Tsauchab River. #photooftheday #science #nature 📷: Courtesy of Shutterstock