did-you-kno:

Miners in Chihuahua, Mexico discovered the Giant Crystal Cave while they were digging a new tunnel. Expecting a flood, they instead found huge crystals jutting out from the floor, which formed from the hot, mineral-rich water that filled the cave for 500,000 years. Source

did-you-kno:

Miners in Chihuahua, Mexico discovered the Giant Crystal Cave while they were digging a new tunnel. Expecting a flood, they instead found huge crystals jutting out from the floor, which formed from the hot, mineral-rich water that filled the cave for 500,000 years. Source