Ancient Aliens

Season 3 Episode 13

Aliens and the Secret Code

Aired Unknown Oct 19, 2011 on The History Channel
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Episode Summary

Are ancient megalithic structures, complex prehistoric ruins, and advanced mathematics in landmarks around the world the works of humans alone? Or are they made by visitors from outer space? These are the questions that this episode tackles as it probes the astounding intelligence behind magnificent man-made structures built more than 5,000 year ago.


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