Nature / Wildlife
Crystal Cave by NGM
From the 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.
Check out the photos in the photo gallery. These crystals are up to 37 feet long and they think they started growing 600,000 years ago, amazing!
