The world's largest crystal cave
By Next Stop StoriesFeatures correspondent
As Mila Carretero, geologist and coordinator of the Pulpí Geode, explained, a geode is a cavity inside a rock that is covered with crystals (Image credit: Getty)An abandoned mine in Spain hides a sparkling treasure – the world's largest geode, a natural crystal phenomenon that has stunned scientists.
In abandoned silver mine in Pulpí, in Spain's south-eastern Almería Province, lies a treasure that's not made from any precious metal at all.
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