03. Crystal Cave, Mexico
The Crystal Cave is located in Chihuahua Mexico. This cave was discovered recently in 2000 at the Naica mine, 300 meters below the surface. This cave has crystals formed thanks to the temperature there that has kept it preserved for thousands of years. One of the main crystals that this cave possesses is the Selenite crystals. The largest crystal this cave has is 12m long and 55 tons in weight. The temperature in this cave can rise up to 58 degree Celsius.But don’t get sad! Tourists can explore the cave with a guide and training.