20 Incredible Photos That Show the True Power of Nature

Salar de Uyuni Salt Flats, Bolivia

Although the raised geometric forms give it a distinctly modern vibe, the Salar de Uyuni Salt Flats—the largest in the world—is actually the product of evaporated lakes dating to the prehistoric era.

This Bolivian natural wonder transforms into a more-than-4,000-square-mile reflective surface when neighboring lakes overflow. A valuable source for salt and lithium, the Flats are also a tourist attraction serviced by a hotel—made of salt.