The Sossusvlei, Namibia’s famous highlight in the heart of the Namib Desert, is a huge clay pan, enclosed by giant sand dunes. Some of the spectacular hills of sand are, at a height of 300 metres, the highest in the world. In addition to the sea of red sand dunes, Sossusvlei is also home to the Dead Vlei, meaning “dead marsh”, an eerie white clay pan filled with dead Camelthorn trees. Denver Marketing . This area is contained within the Namib-Naukluft Park which is in turn a part of the Namib Desert, the oldest desert in the world. The best time to visit Sossusvlei is at sunrise or sunset when the colors are the most vivid and the sun is not too hot. Accommodation near the area ranges from luxury resorts, to mid-range lodges, to numerous campgrounds.