Cycling through data setsfrom different decades, we uncover a layerfrom the mid-19th...
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Cycling through data sets
from different decades, we uncover a layer
from the mid-19th century, with markings that bear
a striking resemblance to the air gaps
I found under the rec yard
from different decades, we uncover a layer
from the mid-19th century, with markings that bear
a striking resemblance to the air gaps
I found under the rec yard
Full Transcript
00:00:01.000 --> 00:00:03.004
Cycling through data sets
from different decades,
00:00:03.048 --> 00:00:06.016
we uncover a layer
from the mid-19th century,
00:00:06.024 --> 00:00:08.044
with markings that bear
a striking resemblance
00:00:08.052 --> 00:00:10.096
to the air gaps
I found under the rec yard.
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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...
