On the Trail of the Nephilim: Episode 2 - Mathematical Mysteries of the Moundbuilders (2019)

Did the academic establishment destroy evidence of an ancient and highly-developed civilization that once roamed the hills and valleys of the Midwest United States?

Documentary

L.A. Marzulli, Fritz Zimmerman

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On the Trail of the Nephilim: Episode 2 - Mathematical Mysteries of the Moundbuilders (2019)
Cinemaxx Studio