Secrets of the Underground
Overview
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.
Released:
February 11, 2017
Genre:
Documentary
Country:
United States
Duration:
60 min
Cast:
Adam Cho, Doug Platt, Jared Peacock, John A. Martini, Mark W. Holley
