Secrets of the Underground

Secrets of the Underground

63%★ 6.32017

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.

Stagioni ed episodi

Cast
Adam ChoAdam ChoDoug PlattDoug PlattJared PeacockJared PeacockJohn A. MartiniJohn A. MartiniMark W. HolleyMark W. HolleyRob NelsonRob NelsonStefan BurnsStefan BurnsTim BechtelTim BechtelTim KilgannonTim KilgannonValerie Van HeestValerie Van Heest

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