Secrets of the Underground
2017 | TV Series | 1h | TV-PG
Secrets of the Underground
2017 | TV Series | 1h | TV-PG
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6.3
193
2
Seasons
17
Episodes
Documentary
Synopsis
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.
