- Cave of Crystals – Mexico
Also called as the Naica mines, these underground caves are situated at least 300 meters under the surface of the Naica region located in Mexico. The cave consists of large deposits of crystals made up of gypsum and selenite. The crystals formed are large in size and are one of the largest crystals found in nature.
- Salar de Uyuni – Bolivia
One of the largest salt flats in the world spanning over 10, 000 square kilometers. These salt flats are formed due to the change in nature of prehistoric lakes and are located in the Potosí region of Bolivia. These salt flats contain high concentration of lithium salts and is one of the largest reserves for lithium.