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A receiver above ground
uses those waves to locate exactly
where the sonde is beneath it
uses those waves to locate exactly
where the sonde is beneath it
Full Transcript
00:00:01.000 --> 00:00:03.032
A receiver above ground
uses those waves
00:00:03.004 --> 00:00:06.052
to locate exactly
where the sonde is beneath it.
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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...