spelunk!

In April 2000, brothers Juan and Pedro Sanchez were drilling a new tunnel when they made
a truly spectacular discovery. While Naica miners are accustomed to finding crystals, Juan and
Pedro were absolutely amazed by the cavern that they found. The brothers immediately informed
the engineer in charge, Roberto Gonzalez. Ing. Gonzalez realized that they had discovered a
natural treasure and quickly rerouted the tunnel. During this phase some damage was done
as several miners tried to remove pieces of the mega-crystals, so the mining company soon
installed an iron door to protect the find. Later, one of the workers, with the intention of
stealing crystals, managed to get in through a narrow hole. He tried to take some plastic bags
filled with fresh air inside, but the strategy didn't work. He lost consciousness and later was
found thoroughly baked.

The Fortress of Solitude found “for reals”? Check out this ginormous freaking crystal cave. (thanks, TimK!)