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Since we can't
just tear open the wall, there's only one way
to find out for sure
just tear open the wall, there's only one way
to find out for sure
Full Transcript
00:00:01.000 --> 00:00:03.008
Since we can't
just tear open the wall,
00:00:03.016 --> 00:00:05.048
there's only one way
to find out for sure.
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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...