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        Listed under:  Science  >  Earth and space  >  Earth structure  >  Earth's crust  >  Earth movements
        Video

        Foreign Correspondent: Prehistoric evidence

        • TLF-IDM017472

        Beneath the Yucatán Peninsula in south-eastern Mexico exists a karst aquifer, the largest underground river system in the world. Discover its deep caverns, which have been perfectly preserved for thousands of years, complete with prehistoric remains.

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