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If, in theory, we could get through
this wall, I think we'd get
to a whole tunnel network
this wall, I think we'd get
to a whole tunnel network
Full Transcript
00:00:01.000 --> 00:00:03.064
If, in theory, we could get through
this wall,
00:00:03.072 --> 00:00:06.004
I think we'd get
to a whole tunnel network.
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Movie Summary
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 g...