2018-01-09T05:00:00Zs at 2018-01-09T05:00:00Z on Science
2022-01-30T05:00:00Z
42m
2h 56m(4 episodes)
United States
English
Attraction Images
Documentary
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.
