When did Underground Marvels Season 1 Episode 9 air?
Underground Marvels Season 1 Episode 9 aired on December 19, 2019.
Underground Marvels
Historians, engineers, and experts take a look at the underground structures, systems, and phenomena that exist beneath our feet.
Season 1 · Episode 9
Conspiracy in the Buried City
Dec 19, 2019·45m
A buried ancient city hidden five stories underground, and to keep its location secret from invaders, its residents devised an ingenious trick; experts reveal what it was, and using the latest tech, they reveal the truth behind this strange place.
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Direct answers for episode-level questions and details.
How long is Underground Marvels Season 1 Episode 9?
This episode runs for approximately 45 minutes.
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