Discovered by chance, the secret Mexican crystal caves big enough to drive a car through
The Naica Mine of the Mexican state of Chihuahua, is a working mine that is best known for its extraordinary selenite crystals. Located in Naica in the municipality of Saucillo, the Naica Mine is a lead, zinc and silver mine operated by Industrias Peñoles, Mexico’s largest lead producer. Caverns discovered during mining operations contain crystals of selenite (gypsum) as large as 4 feet (1.2 m) in diameter and 50 feet (15 m) long. […]
Read article here: https://www.geologyin.com/2014/11/the-huge-cave-mines-at-naica-mexico.html
