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Secrets of the Underground

If that's true, this wouldn't be the only COG sitein the United States

If that's true, this wouldn't be the only COG site
in the United States

Full Transcript

00:00:01.000 --> 00:00:02.036
If that's true,
00:00:02.044 --> 00:00:06.012
this wouldn't be the only COG site in the United States.
Duration
6 seconds
Views
13
Timestamp in Movie
00:08:25
Uploaded
Jul 09, 2025
Season
1
Episode
2
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 • E01 You can see, reinforcement 3-6", - Secrets of the Underground 00:06
You can see, reinforcement 3-6",
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.