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Sci. Ch. - Underground Marvels Series 1 (2019) Part 9 Conspiracy in the Buried City
Sci. Ch. - Underground Marvels Series 1 (2019) Part 9 Conspiracy in the Buried City 
Underground Marvels Series 1 Part 9 Conspiracy in the Buried City
A buried ancient city hidden five stories underground, and to keep its location secret from invaders, its residents devised an ingenious trick; experts reveal what it was, and using the latest tech, they reveal the truth behind this strange place.
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