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That has the potential To rewrite american history
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Secrets of the Underground

That has the potentialTo rewrite american history

That has the potential
To rewrite american history

Full Transcript

00:00:01.000 --> 00:00:04.005
That has the potential To rewrite american history.
Duration
5 seconds
Views
23
Timestamp in Movie
00:08:39
Uploaded
Jul 13, 2025
Season
1
Episode
7
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 • 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 • 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 • 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 • E08 The question is, - Secrets of the Underground 00:06
The question is,
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 • 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
S01 • E08 Stefan and I are gonna take some of this high-tech equipment - Secrets of the Underground 00:08
Stefan and I are gonna take some of this high-tech equipment
S01 • E02 With the eyes of airport security now watching my every move, - Secrets of the Underground 00:07
With the eyes of airport security now watching my every move...
S01 • E01 This is a very very thin wall, only about 2" thick. - Secrets of the Underground 00:04
This is a very very thin wall, only about 2" thick.
S01 • E07 For the million-plus residents Of sacramento, fresno, and reno? - Secrets of the Underground 00:07
For the million-plus residents Of sacramento, fresno, and re...
S01 • E08 The prison recreation yard is where subterranean air gaps - Secrets of the Underground 00:08
The prison recreation yard is where subterranean air gaps
S01 • E01 If, in theory, we could get through this wall, - Secrets of the Underground 00:06
If, in theory, we could get through this wall,
S01 • E02 But the airport isn't the only spot in Denver - Secrets of the Underground 00:07
But the airport isn't the only spot in Denver