40,000 years ago there was a big lake. Then the water dried. And now it's all salt.
Lots of salt. More than 4,000 square miles of it.
What's really cool about the Salar De Uyuni salt desert in southern Bolivia is that there's no visual perspective: no matter which direction you look, all you see is white. Allowing for wicked-cool photos utilizing optical illusions to create some very intriguing scenes.
The day ended with a marvelous sunset...allowing for a few more great pics as we silhouetted against the evening sky.