Season 1
9 episodes
42 min. per episode
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A brilliant archaeologist confronts ancient secrets beneath cities, unraveling mysteries that could rewrite history and threaten powerful interests.
Episodes
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Rob Nelson investigates rumors of a secret underground escape route used by the infamous gangster Al Capone. In Washington state, Rob tries to uncover who or what built a vast landscape of earthen mounds in Washington state.
Rob Nelson explores mysterious tunnels beneath Denver's airport, capitol building, and downtown to investigate rumors of a secret organization that operates below. In Ohio, he tries to uncover the ancient secrets of a giant mound shaped like a serpent.
What caused the deaths of 57 Irish railroad workers in 1832 Pennsylvania at a place called Duffy's Cut. And then, we look at Mountain Lake in Virginia that has mysteriously lost most of it's water.
Rob Nelson examines a set of bizarre markings that suggest a violent clash between prehistoric beasts. In California, he investigates if a strange lake is a home to alien life.
Using cutting-edge technologies such as ground penetrating radar (GPR), LIDAR (Light Detection and Ranging), and 3-D imaging, scientists research fascinating underworlds of secret tunnel networks, ancient structures, and bizarre geological occurrences that offer glimpses into our history.