A TREA­SURE CHAM­BER 300 ME­TRES DEEP

World of Knowledge (Australia) - - Nature -

Sci­en­tists from six dif­fer­ent na­tions have been ex­plor­ing the Naica caves for the past three years. They’ve been mea­sur­ing the crys­tals and tak­ing sam­ples of rock in or­der to learn more about pre­his­toric earth­quakes and ground­wa­ter move­ments. Their re­search has un­cov­ered three more crys­tal caves (see di­a­gram right). The caves have since been sealed be­cause the in­flux of air was caus­ing the se­len­ite col­umns to slowly dis­in­te­grate. Once they are re­flooded with wa­ter, the crys­tals will be­gin to grow again.

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