Secrets of the Underground Season 1 Episode 3
America's Buried Massacre
Rob Nelson hunts for a legendary mass grave that could expose a dark secret of America's industrial past. High in the mountains, a giant lake is mysteriously disappearing, and Rob uses cutting-edge technology to find out why.
1 - 8American StonehengeApr. 04, 2017- 1 - 7Secret History of the New WorldMar. 28, 2017
- 1 - 6California's Hidden DoomsdayMar. 21, 2017
- 1 - 5Great Lakes Bermuda TriangleMar. 14, 2017
- 1 - 4Rocky Mountain MonstersMar. 07, 2017
- 1 - 3America's Buried MassacreFeb. 28, 2017
- 1 - 2Mystery of the Serpent MoundFeb. 21, 2017
- 1 - 1Capone's Escape TunnelsFeb. 14, 2017
