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The data from the 4-D model appears to suggest
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Secrets of the Underground

The data from the 4-D modelappears to suggest the anomalies we detected underthe rec yard...

The data from the 4-D model
appears to suggest the anomalies we detected under
the rec yard were not escape tunnels

Full Transcript

00:00:01.000 --> 00:00:03.004
The data from the 4-D model appears to suggest
00:00:03.048 --> 00:00:07.064
the anomalies we detected under the rec yard were not escape tunnels.
Duration
8 seconds
Views
15
Timestamp in Movie
00:21:06
Uploaded
Jul 09, 2025
Season
1
Episode
8
Genres
documentary

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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...
S01 • E07 As we analyze the data, - Secrets of the Underground 00:06
As we analyze the data,
S01 • E03 The lake levels began to drop dramatically - Secrets of the Underground 00:08
The lake levels began to drop dramatically
S01 • E02 First, I want to see exactly what lies behind this entrance. - Secrets of the Underground 00:05
First, I want to see exactly what lies behind this entrance.
S01 • E02 So, I'm gonna wire this little snake hammer in there, - Secrets of the Underground 00:05
So, I'm gonna wire this little snake hammer in there,
S01 • E08 Instead, they were most likely gaps between Civil War era fortifications, - Secrets of the Underground 00:08
Instead, they were most likely gaps between Civil War era fo...
S01 • E01 There's like a little gap, not very big, maybe 2', - Secrets of the Underground 00:06
There's like a little gap, not very big, maybe 2',
S01 • E03 Evaporation alone could never account for such a dramatic drop, - Secrets of the Underground 00:08
Evaporation alone could never account for such a dramatic dr...
S01 • E01 I'll put the GoProbe up there so you guys can see what it looks like. - Secrets of the Underground 00:05
I'll put the GoProbe up there so you guys can see what ...
S01 • E08 Though I was sceptical at first, - Secrets of the Underground 00:09
Though I was sceptical at first,
S01 • E02 ..not just dirt, we've got a ceiling made of wood, - Secrets of the Underground 00:09
..not just dirt, we've got a ceiling made of wood,
S01 • E01 We're going up inside... inside the ceiling. - Secrets of the Underground 00:05
We're going up inside... inside the ceiling.
S01 • E07 There are smaller, Satellite ones around the area. - Secrets of the Underground 00:05
There are smaller, Satellite ones around the area.
S01 • E03 This right here is the little section of water that remains of this lake, - Secrets of the Underground 00:07
This right here is the little section of water that remains ...
S01 • E08 That they had built a secret network of escape tunnels - Secrets of the Underground 00:07
That they had built a secret network of escape tunnels
S01 • E01 From downstairs up, up, up, up, up, - Secrets of the Underground 00:07
From downstairs up, up, up, up, up,
S01 • E07 Aren't the prelude to another Supervolcanic eruptions, - Secrets of the Underground 00:07
Aren't the prelude to another Supervolcanic eruptions,
S01 • E02 I think if we removed this door, it would collapse for sure. - Secrets of the Underground 00:05
I think if we removed this door, it would collapse for sure.
S01 • E03 It's almost hard to imagine that 80ft over our head - Secrets of the Underground 00:08
It's almost hard to imagine that 80ft over our head
S01 • E08 But it appears there was no way out underground after all. - Secrets of the Underground 00:04
But it appears there was no way out underground after all.
S01 • E01 He was said to stand around 5'10" and weigh as much as 260lbs. - Secrets of the Underground 00:05
He was said to stand around 5'10" and weigh as muc...