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For three decades, it was kept permanently prepped
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Secrets of the Underground

For three decades,it was kept permanently prepped with food and other supplies

For three decades,
it was kept permanently prepped with food and other supplies

Full Transcript

00:00:01.000 --> 00:00:03.068
For three decades, it was kept permanently prepped
00:00:03.076 --> 00:00:05.084
with food and other supplies.
Duration
6 seconds
Views
16
Timestamp in Movie
00:08:42
Uploaded
Jul 13, 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 • 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 • 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 • 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
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
S01 • E07 When magma moves up From the earth's core, - Secrets of the Underground 00:09
When magma moves up From the earth's core,
S01 • E08 If inmates burrowed underneath it, their trail would have started here. - Secrets of the Underground 00:05
If inmates burrowed underneath it, their trail would have st...
S01 • E01 GPR confirms it. There's empty space behind these two portals. - Secrets of the Underground 00:05
GPR confirms it. There's empty space behind these two p...
S01 • E02 There are rumours of a labyrinth leading to and from - Secrets of the Underground 00:07
There are rumours of a labyrinth leading to and from