Underground Railroad: The Secret History Season 1 or Cancelled? Discovery Channel Renewal & Release Date

<p>To be successful, the Underground Railroad had to operate in secrecy - therefore, little written documentation about these journeys exists. Now, new technology and extensive research are revealing that the Underground Railroad's path not only led north - from southern U.S. states where slavery was legal into free northern states and Canada. But it also took surprising turns to the south, all the way into Florida, Mexico and the Caribbean. The details uncovered also show that stops in the north often proved as dangerous as those in the states from which Freedom Seekers fled.</p> <p>From secret hideaways located in graveyards just outside of the nation's capital and underground tunnels originally built by George Washington, to a refuge deep in a swamp, the series uses thermal drones, LiDAR, GPR and GIS to map and record the hidden underground tunnels, remote caves and thriving yet isolated communities used by Freedom Seekers escaping enslavement.</p>