Secrets of the Underground (2017)

6.7
2017

Genre: Documentary

Plot: 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. Read More

S02E05

Season

2
1
Episode 5: Atlantis in America
Episode 3: Tesla's Final Secrets
Episode 1: Legend of the Nazi Gold
Episode 8: American Stonehenge
Episode 7: Secret History of the New World
Episode 6: California's Hidden Doomsday
Episode 5: Great Lakes Bermuda Triangle
Episode 4: Rocky Mountain Monsters
Episode 3: America's Buried Massacre
Episode 2: Mystery of the Serpent Mound
Episode 1: Capone's Escape Tunnels