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Are they man-made
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Secrets of the Underground

Are they man-made, some sort of obscure geologicalphenomenon or something even more...

Are they man-made, some sort of obscure geological
phenomenon or something even more surprising?

Full Transcript

00:00:01.000 --> 00:00:02.006
Are they man-made,
00:00:02.068 --> 00:00:04.008
some sort of obscure geological phenomenon
00:00:04.088 --> 00:00:08.004
or something even more surprising?
Duration
8 seconds
Views
35
Timestamp in Movie
00:24:08
Uploaded
Jul 12, 2025
Season
1
Episode
1
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 • 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 • E03 We wanna scour the bottom for different areas - Secrets of the Underground 00:05
We wanna scour the bottom for different areas
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 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.
S01 • E03 I'd searched for other lakes that might offer a clue - Secrets of the Underground 00:07
I'd searched for other lakes that might offer a clue
S01 • E08 If you don't go through Mark Holley, you don't see the site. - Secrets of the Underground 00:04
If you don't go through Mark Holley, you don't see...
S01 • E02 But I'm still not sure what it adds up to, - Secrets of the Underground 00:05
But I'm still not sure what it adds up to,
S01 • E07 Here, let's go down Right through here, - Secrets of the Underground 00:05
Here, let's go down Right through here,
S01 • E01 That might be a stretch, - Secrets of the Underground 00:06
That might be a stretch,
S01 • E03 Last winter, it was one-and-a-half times bigger than Mountain Lake, - Secrets of the Underground 00:09
Last winter, it was one-and-a-half times bigger than Mountai...
S01 • E08 Having granted me special access, - Secrets of the Underground 00:10
Having granted me special access,
S01 • E02 Then a friend texts me - Secrets of the Underground 00:11
Then a friend texts me