Plot Synopsis

SECRETS OF THE UNDERGROUND is a one-hour series that follows scientist and tech fanatic Rob Nelson, as he travels the country to investigate long lost, subterranean phenomena. With the recent emergence of cutting-edge technologies such as ground penetrating radar (GPR), LIDAR (Light Detection and Ranging), and 3-D imaging, scientists are now able to research fascinating underworlds of secret tunnel networks, ancient structures, and bizarre geological occurrences that offer glimpses into our history like we've never been able to see before. From intricate and forgotten sewers and caves, to lost civilizations and structures, SECRETS OF THE UNDERGROUND looks at all things covert, hidden and unfamiliar. The premiere episode finds Nelson in Louisville, Kentucky, where it's been thought that Al Capone used underground passageways as a secret escape route during Prohibition. And in Washington state, Nelson deploys a series of advanced scanning techniques to try to figure out the origins of thousands of earthen mounds that have baffled scientists for generations. Among the other mysteries that Nelson looks to uncover include the existence of a legendary network of complex tunnels at Alcatraz, long rumored by inmates to be a gateway to freedom; Lake Michigan's "Underwater Stonehenge"; and Pennsylvania's fabled mass grave.
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On Saturday, October 28, 2017 at 10pm ET/PT, Science Channel premiered the second season of SECRETS OF THE UNDERGROUND, as explorer, adventurer biologist and tech fanatic Rob Nelson and his new co-host, geophysicist Stefan Burns, dig deep into some of the world's most notorious underground legends including the long-rumored Nazi Gold Train, America's Atlantis, the Lost Temple of Jerusalem, Nikola Tesla's buried master plans, and more. In the season opener, "Legend of the Nazi Gold," Rob and Stefan jet to southwestern Poland to investigate rumors of a buried train packed with stolen Nazi treasure, valued at over a billion dollars. The legend is fueled by the region's Owl Mountains, home to miles of underground tunnels constructed in the final days of the Third Reich as part unfinished Nazi project of still-unknown purpose. They are even believed to connect to many of the nearby castles in the area. Were these labyrinths constructed as a last-ditch effort to hide Nazi loot? The use of the first-ever metallic scan next to a stretch of track reveals a large metal anomaly, leading to a new theory on where the train could be hidden.