Uploaded April 2026 | Updated September 2026, 3 weeks ago
Forensic geologist Scott Wolter investigates a massive, 50-mile stone wall in California that has no official place in American history books. By tracing the construction style back to ancient China and analyzing rare Ming Dynasty maps, Wolter uncovers evidence of a massive seafaring operation that reached the US West Coast centuries before Columbus. Was Marco Polo a secret agent on these voyages? From the foothills of San Francisco to the Great Wall itself, we explore the artifacts and evidence that could rewrite the history of the New World forever.
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Forensic geologist Scott Wolter investigates a massive, 50-mile stone wall in California that has no official place in American history books. By tracing the construction style back to ancient China and analyzing rare Ming Dynasty maps, Wolter uncovers evidence of a massive seafaring operation that reached the US West Coast centuries before Columbus. Was Marco Polo a secret agent on these voyages? From the foothills of San Francisco to the Great Wall itself, we explore the artifacts and evidence that could rewrite the history of the New World forever.
You can now become a History Hit member right here on YouTube! Join for access to a new exclusive documentary every week, and access to over 160+ of our documentaries presented by world renowned historians like Dan Snow, Eleanor Janega, Tristan Hughes, Mary Beard, Matt Lewis and more.
Get an exclusive release every week by signing up here: bit.ly/4pyExyn
This channel is part of the History Hit Network. Any queries, please contact owned-enquiries@littledotstudios.com
