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But it was on the second floor, with no direct access
to the sub-basement. Or was there?
to the sub-basement. Or was there?
Full Transcript
00:00:01.000 --> 00:00:03.004
But it was on the second floor,
00:00:03.048 --> 00:00:06.084
with no direct access
to the sub-basement. Or was there?
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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...