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For starters, if this is man-made, how did it get 40ft underwater?
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Secrets of the Underground

For starters, if this is man-made,how did it get 40ft underwater?

For starters, if this is man-made,
how did it get 40ft underwater?

Full Transcript

00:00:01.000 --> 00:00:06.008
For starters, if this is man-made, how did it get 40ft underwater?
Duration
6 seconds
Views
14
Timestamp in Movie
00:23:53
Uploaded
Jul 09, 2025
Season
1
Episode
8
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 We set up on a pontoon boat, - Secrets of the Underground 00:06
We set up on a pontoon boat,
S01 • E08 And even more perplexing, what exactly is it? - Secrets of the Underground 00:04
And even more perplexing, what exactly is it?
S01 • E01 In all directions, as far as the eye can see, - Secrets of the Underground 00:06
In all directions, as far as the eye can see,
S01 • E03 Somewhere out here are those old vents. - Secrets of the Underground 00:05
Somewhere out here are those old vents.
S01 • E07 In groton, connecticut, - Secrets of the Underground 00:05
In groton, connecticut,
S01 • E03 And what we want to do first - Secrets of the Underground 00:05
And what we want to do first
S01 • E08 To probe these mysteries, - Secrets of the Underground 00:06
To probe these mysteries,
S01 • E01 Are they man-made, - Secrets of the Underground 00:08
Are they man-made,
S01 • E02 Some believe there is a vast government conspiracy playing out beneath Denver, - Secrets of the Underground 00:12
Some believe there is a vast government conspiracy playing o...
S01 • E08 By deploying state-of-the-art technology that can capture - Secrets of the Underground 00:07
By deploying state-of-the-art technology that can capture
S01 • E03 We wanna scour the bottom for different areas - Secrets of the Underground 00:05
We wanna scour the bottom for different areas
S01 • E03 Paki here thinks he has an idea where it is. - Secrets of the Underground 00:04
Paki here thinks he has an idea where it is.
S01 • E01 These mounds are one of the greatest unsolved mysteries - Secrets of the Underground 00:06
These mounds are one of the greatest unsolved mysteries
S01 • E02 I've found clues pointing to highly sensitive secret tunnels - Secrets of the Underground 00:07
I've found clues pointing to highly sensitive secret tu...
S01 • E03 No-one has explained fully how these vents could have drained the lake, - Secrets of the Underground 00:06
No-one has explained fully how these vents could have draine...
S01 • E07 Within these Subterranean structures, - Secrets of the Underground 00:07
Within these Subterranean structures,
S01 • E08 First, I need to talk to the man who made the initial discovery, - Secrets of the Underground 00:07
First, I need to talk to the man who made the initial discov...
S01 • E02 And now I'm investigating an underground link between - Secrets of the Underground 00:07
And now I'm investigating an underground link between
S01 • E01 This mysterious landscape is so bizarre, - Secrets of the Underground 00:07
This mysterious landscape is so bizarre,
S01 • E07 You can look right down Into a cavity right down there. - Secrets of the Underground 00:05
You can look right down Into a cavity right down there.