click hereMexico's Cave of Crystals stunned geologists when it was first discovered in 2000. The underground chamber contains some of the largest natural crystals ever found - some of the selenite structures have grown to more than 10m long.
Quite amazing, as Seth Haniel says, it looks like Supermans flat. Thanks for sharing.
Sorry I meant Jock1e.
It makes wonder whether Jules Verne was aware of them when he wrote Journey to the Centre of the Earth.
It makes an interesting point that we know more about what's going on 5 billion light years away, than we do a kilometer from our own feet.
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