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But I quickly come
to what appears to be a dead end, with two blocked entrances
to what appears to be a dead end, with two blocked entrances
Full Transcript
00:00:01.000 --> 00:00:03.076
But I quickly come
to what appears to be a dead end,
00:00:03.084 --> 00:00:06.044
with two blocked entrances.
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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...