Sunrise at Dune 45, Sossusvlei, Namib Desert
Sossusvlei (the name means saucer bowl) itself is in the background.  It's supposed to be the largest sand dune in the world
Hugh and Caroline, the English couple I traveled with, standing on Dune 45.
Walking up dunes is physically exhausting.  Jennifer Lopez walked up this same dune for the desert dream scene in The Cell.
From halfway down the dune.  You can see people standing up on the right to give you a sense of size.
There is life in the sand.  There were these beetles and other that looked like Skittles that would periodically run across your path
Another dune bowl, called dead vlei, sports dead 600 year old trees. 
More pictures!