. . . . big enough to drive a car through
Discovered by two miners looking for lead, these amazing crystal-lined caves could be mistaken for Superman's ethereal Arctic lair.
These stunning white beams of gypsum have been growing at a snail's pace for hundreds of thousands of years in caves below Naica in Mexico.
Ten years after the amazing discovery, scientists are petitioning the Mexican government to claim for Unesco World Heritage status to protect the unique formations for future generations
http://www.dailymail.co.uk/news/arti...#ixzz1T5j7EiBA




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