World's 10 Most Mysterious Lost Civilizations

These are entire groups that rose, and often fell, leaving indelible marks on history, and more than a little confusion about them. Today we're looking at ten great ancient civilizations that are shrouded in mystery...


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IMAGE CREDITS: Stefan Krasowski, Robert Young, Xiaojun Deng, Andre Pessoa

MUSIC CREDITS: "Arabia" by Ultrasoundpro

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