“massive beams of selenite dwarf human explorers in mexico’s cave of crystals, deep below the chihuahuan desert. formed over millennia, these crystals are among the largest yet discovered on earth.
cave of crystal giants [national geographic]
“massive beams of selenite dwarf human explorers in mexico’s cave of crystals, deep below the chihuahuan desert. formed over millennia, these crystals are among the largest yet discovered on earth.
cave of crystal giants [national geographic]