The Cave of Crystals
The Cave of Crystals, also known as the Giant Crystal Cave, is a natural wonder located in Naica, Mexico. It is famous for its massive gypsum crystals, some of which are up to 36 feet long and weigh up to 55 tons. The cave was discovered in 2000 by two miners who were working in the Naica mine. Since then, it has become a popular destination for scientists and tourists alike.