Underground Railroad: The Secret History 2022
![Still image taken from Underground Railroad: The Secret History](https://channelhopper.org/media/90305/rWL7s1jqmpAtDi6DmeghobRMdS1.jpg)
Archaeologists and historians use cutting-edge technology to investigate and explore some of the biggest mysteries surrounding the Underground Railroad, a secret network that helped enslaved African Americans escape to freedom.
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