Mexico’s Cueva de los Cristales, or Cave of Crystals, may look like Superman’s Fortress of Solitude. But unlike its comic book counterpart, this cave’s assortment of supersized crystals took a lot longer than a few minutes to grow.
Mexico’s Cueva de los Cristales, or Cave of Crystals, may look like Superman’s Fortress of Solitude. But unlike its comic book counterpart, this cave’s assortment of supersized crystals took a lot longer than a few minutes to grow.