3Giant Crystal Cave, Mexico

Situated 300 m beneath the Sierra de Naica Mountains, Crystal Cave has formed almost 26 million years ago. The cave is roughly 30 m long and 10 m wide and was filled with groundwater for tens of thousands of years. This water contains the mineral anhydrite. The magma beneath keeps the water hot.

Eventually, the temperature of water-dipped, which resulted in breaking down anhydrates and the water became rich in calcium and sulfate. The white-tinted selenite crystals took over the cave around 500,000 to 900,000 years ago. Location: Naica, Chihuahua, Mexico
.

RELATED ARTICLESMORE FROM AUTHOR