Islands on MSN
The 'Sistine Chapel of Crystals' is a unique cave in Mexico with some of the largest natural crystals worldwide
In northern Mexico, a sealed underground chamber deep beneath the Sierra de Naica holds towering selenite formations ...
ZME Science on MSN
GeoPicture of the week: Biggest crystals in the world
Known as Cueva de los Cristales (Cave of Crystals), this hidden chamber in Mexico holds some of the largest natural crystals ...
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