|Deadvlei is a white clay pan located near the more famous salt pan of Sossusvlei, inside the Namib-Naukluft Park in Namibia. Also written DeadVlei or Dead Vlei, its name means "dead marsh" (from English dead, and Afrikaans vlei, a lake or marsh in a valley between the dunes).|
Deadvlei has been claimed to be surrounded by the highest sand dunes in the world, the highest reaching 300-400 meters (350m on average, named "Big Daddy" or "Crazy Dune"), which rest on a sandstone terrace.
The trees died as there no longer was enough water to survive. There are some species of plants remaining, such as salsola and clumps of nara, adapted to surviving off the morning mist and very rare rainfall. The remaining skeletons of the trees, which are believed to be about 900 years old, are now black because the intense sun has scorched them. Though not petrified, the wood does not decompose because it is so dry.