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And at first glance
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Secrets of the Underground

And at first glance, no obvious traces ofhuman presence jump out at me

And at first glance, no obvious traces of
human presence jump out at me

Full Transcript

00:00:01.000 --> 00:00:02.016
And at first glance,
00:00:02.024 --> 00:00:05.032
no obvious traces of human presence jump out at me.
Duration
5 seconds
Views
14
Timestamp in Movie
00:33:01
Uploaded
Jul 08, 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 Tugging on the cables could damage the equipment, - Secrets of the Underground 00:10
Tugging on the cables could damage the equipment,
S01 • E01 Is a hammer and plywood really all it takes - Secrets of the Underground 00:07
Is a hammer and plywood really all it takes
S01 • E07 Today, about 400 known Ogham inscriptions survive, - Secrets of the Underground 00:07
Today, about 400 known Ogham inscriptions survive,
S01 • E08 But one stone in particular - Secrets of the Underground 00:05
But one stone in particular
S01 • E03 So there's only one option, - Secrets of the Underground 00:05
So there's only one option,
S01 • E02 If this serpent is a mass burial site, - Secrets of the Underground 00:07
If this serpent is a mass burial site,
S01 • E01 To find out, I'm going to have to dig deeper, - Secrets of the Underground 00:06
To find out, I'm going to have to dig deeper,
S01 • E08 I think that might be our stone here. - Secrets of the Underground 00:04
I think that might be our stone here.
S01 • E03 And while I'm down there, - Secrets of the Underground 00:08
And while I'm down there,
S01 • E07 A district on the edge Of ireland that faces due west. - Secrets of the Underground 00:04
A district on the edge Of ireland that faces due west.
S01 • E08 ..because they think it has a carving etched onto its face. - Secrets of the Underground 00:04
..because they think it has a carving etched onto its face.
S01 • E08 Here you can see it looks pretty rounded off, - Secrets of the Underground 00:10
Here you can see it looks pretty rounded off,
S01 • E07 This upright's consistent With the letter "B." - Secrets of the Underground 00:06
This upright's consistent With the letter "B."...
S01 • E02 At first, the GPR screen is quiet, indicating no anomalies underground. - Secrets of the Underground 00:06
At first, the GPR screen is quiet, indicating no anomalies u...
S01 • E03 We're calling it a cave, but what it really is it's nested boulders - Secrets of the Underground 00:06
We're calling it a cave, but what it really is it'...
S01 • E07 Are consistent With the letter "L." - Secrets of the Underground 00:06
Are consistent With the letter "L."
S01 • E08 Finding a carving would confirm that this site is man-made, - Secrets of the Underground 00:08
Finding a carving would confirm that this site is man-made,
S01 • E03 So when you're retrieving the ROV, don't move any rocks, - Secrets of the Underground 00:06
So when you're retrieving the ROV, don't move any ...
S01 • E01 Could the mysterious Mima Mounds of Washington State - Secrets of the Underground 00:06
Could the mysterious Mima Mounds of Washington State
S01 • E02 (RAPID BEEPING) - Secrets of the Underground 00:04
(RAPID BEEPING)