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Secrets of the Underground

You can see,reinforcement 3-6", you can see there's rebar in there

You can see,
reinforcement 3-6", you can see there's rebar in there

Full Transcript

00:00:01.000 --> 00:00:04.044
You can see, reinforcement 3-6",
00:00:04.052 --> 00:00:06.044
you can see there's rebar in there.
Duration
6 seconds
Views
17
Timestamp in Movie
00:08:26
Uploaded
Jul 09, 2025
Season
1
Episode
1
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 And later, I'll investigate An ancient irish ruin. - Secrets of the Underground 00:04
And later, I'll investigate An ancient irish ruin.
S01 • E02 In 1992, investigative reporters revealed a top-secret bunker system - Secrets of the Underground 00:11
In 1992, investigative reporters revealed a top-secret bunke...
S01 • E08 And the... prison administration liked it that way. - Secrets of the Underground 00:05
And the... prison administration liked it that way.
S01 • E01 The anomalies in the data reveal not only what's inside the wall, - Secrets of the Underground 00:08
The anomalies in the data reveal not only what's inside...
S01 • E03 Were they just victims of disease who were swept under the rug, - Secrets of the Underground 00:10
Were they just victims of disease who were swept under the r...
S01 • E08 Even a lot of the guards who worked here thought that this stuff... - Secrets of the Underground 00:04
Even a lot of the guards who worked here thought that this s...
S01 • E07 That has the potential To rewrite american history. - Secrets of the Underground 00:05
That has the potential To rewrite american history.
S01 • E01 You can also see there's essentially a gap after 9". - Secrets of the Underground 00:07
You can also see there's essentially a gap after 9"...
S01 • E08 Anything that was brick to these guys said, "Ooh, Spanish tunnels." - Secrets of the Underground 00:14
Anything that was brick to these guys said, "Ooh, Spani...
S01 • E03 You're saying there's evidence this probably wasn't cholera. No. - Secrets of the Underground 00:04
You're saying there's evidence this probably wasn&...
S01 • E02 For three decades, it was kept permanently prepped - Secrets of the Underground 00:06
For three decades, it was kept permanently prepped
S01 • E01 So it looks to me that this wall's about 9" thick. - Secrets of the Underground 00:06
So it looks to me that this wall's about 9" thick.
S01 • E03 And later, I'll head to the Blue Ridge Mountains - Secrets of the Underground 00:09
And later, I'll head to the Blue Ridge Mountains
S01 • E02 Then suddenly, without warning, it was decommissioned. - Secrets of the Underground 00:05
Then suddenly, without warning, it was decommissioned.
S01 • E07 I'm in mammoth lakes, California, - Secrets of the Underground 00:05
I'm in mammoth lakes, California,
S01 • E02 Could Denver be hiding a massive COG site - Secrets of the Underground 00:06
Could Denver be hiding a massive COG site
S01 • E03 This right here is the little section of water that remains of this lake. - Secrets of the Underground 00:06
This right here is the little section of water that remains ...
S01 • E08 The question is, - Secrets of the Underground 00:06
The question is,
S01 • E07 That are associated With volcanic activity. - Secrets of the Underground 00:04
That are associated With volcanic activity.
S01 • E03 To investigate, I'll send an ROV - Secrets of the Underground 00:08
To investigate, I'll send an ROV