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I'm putting that theory to the test with a piece of plywood, some sand
and a hammer to replicate seismic activity
and a hammer to replicate seismic activity
Full Transcript
00:00:01.000 --> 00:00:02.068
I'm putting that theory to the test
00:00:02.076 --> 00:00:05.032
with a piece of plywood, some sand
and a hammer
00:00:05.004 --> 00:00:07.006
to replicate seismic activity.
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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...