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Where to watch "Underground Railroad: The Secret History"
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4. Setting Sail for Freedom
No release date yet
Underwater archaeologists search for the wreck of the USS Planter, a Civil War vessel seized by Freedom Seekers to escape the Confederacy.
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3. Contradictions in the Atlantic
No release date yet
Archaeologists uncover evidence of a Freedom Seeker community in a surprising location, the swampy marshlands between Virginia and North Carolina
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2. Midwest Refuge
No release date yet
Archaeologists unearth the lost community of Quindaro, Kansas, a long-forgotten abolitionist town that shielded Freedom Seekers from bounty hunters.
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1. Seeking Southern Sanctuary
No release date yet
Retracing the steps of escaping freedom seekers, archaeologists use high tech to explore a Florida fort that was nearly erased from history.