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THE MYSTERY OF THE GIANT CRYSTALS is a fascinating adventure in scientific research. A journey into the depths of the Earth in search of the most beautiful treasures of the mineral world, to explain one of its great mysteries: the formation of giant gypsum crystals. From the Roman mines of Segóbrica described by Pliny the Elder, to Europe’s biggest geode, found in Almería, Spain; from the volcanic depths of the Andes, to the grandiose “Cueva de los Cristales de Naica”, an authentic crystal palace hidden beneath the Mexican desert of Chihuahua, we shall discover the wonderful world of crystals, their science and their beauty.