1. Pamukkale (Turkey)
2. Ice Towers of Mount Erebus (Antarctica)
3. Fly Geyser (Nevada, US)
4. Kasha Katuwe Tent Rocks (New Mexico, US)
5. The Valley of the Moon (Argentina)
Erosion over the millennia unearths the fossils as well as other geological formations such as a host of almost spherical concretions. The wind, inexorable and patient, has pounded the local bedrock for an age. Revealed, the boulders that mudstone – in its original wet form, helped to form look as if giants have been playing marbles.
6. Danxia Landform (China)
7. Enchanted Well - Chapada Diamantina National Park (Brazil)
8. The Stone Forest (China)
9. Wulingyan, Hunan (China)
10. Salar de Uyuni (Bolivia)
Some 40,000 years ago, the area was part of Lake Minchin, a giant prehistoric lake. When the lake dried, it left behind two modern lakes, Poopó Lake and Uru Uru Lake, and two major salt deserts, Salar de Coipasa and the larger Uyuni. Uyuni is roughly 25 times the size of the Bonneville Salt Flats in the United States. It is estimated to contain 10 billion tons of salt, from which less than 25,000 tons is extracted annually.