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In helium gases Prior to the blast
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Secrets of the Underground

In helium gasesPrior to the blast

In helium gases
Prior to the blast

Full Transcript

00:00:01.000 --> 00:00:04.769
In helium gases Prior to the blast.
Duration
5 seconds
Views
16
Timestamp in Movie
00:08:07
Uploaded
Jul 12, 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 • E03 But Tim thinks that out of respect, - Secrets of the Underground 00:05
But Tim thinks that out of respect,
S01 • E01 GPR emits a pulse of electromagnetic energy into the wall. - Secrets of the Underground 00:04
GPR emits a pulse of electromagnetic energy into the wall.
S01 • E07 Often right before A volcano erupts, - Secrets of the Underground 00:06
Often right before A volcano erupts,
S01 • E01 The pulse bounced back to a receiver, - Secrets of the Underground 00:08
The pulse bounced back to a receiver,
S01 • E02 Sometimes called a COG site, - Secrets of the Underground 00:12
Sometimes called a COG site,
S01 • E08 On the other side of it, there was a water tank, a water cistern, - Secrets of the Underground 00:07
On the other side of it, there was a water tank, a water cis...
S01 • E03 Will our hi-tech tools finally reveal - Secrets of the Underground 00:05
Will our hi-tech tools finally reveal
S01 • E08 Just condensation coming through it cos there's a water tank there. - Secrets of the Underground 00:04
Just condensation coming through it cos there's a water...
S01 • E01 Almost immediately, - Secrets of the Underground 00:06
Almost immediately,
S01 • E03 If so, we'll be one big step closer to figuring out - Secrets of the Underground 00:09
If so, we'll be one big step closer to figuring out
S01 • E02 If that's true, - Secrets of the Underground 00:06
If that's true,
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"...