More than a sixth of a mile underground. 122 degrees Fahrenheit. 100% humidity. An environment that could kill a man in ten minutes – filled with 35 foot long selenite spears straight out of the Fortress of Solitude.
They’re the Naica caves, one of the most beautiful environments on Earth:
- Giant crystals enjoyed perfection
- A Rare Glimpse of the Cave of Crystals
- Wikipedia on the Naica Mine and the Cave of Crystals
No images, they’re copyright, so click through to the links.
