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07.01 07:05
55 Min
Ancient X Files
Underwater archaeologist Guillermo de Anda follows a trail of evidence across Mexico and Guatemala in search of the Mayan underworld - Xibalba. (Nat Geographic HD)
08.01 07:05
55 Min
Ancient X Files
After centuries of debate, archaeological evidence unearthed in Bulgaria may reveal not only where the Great Flood happened, but what caused it. (Nat Geographic HD)