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As a marine biologist
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Secrets of the Underground

As a marine biologist, I've spent a lot of timeexploring underwater this way

As a marine biologist, I've spent a lot of time
exploring underwater this way

Full Transcript

00:00:01.000 --> 00:00:02.024
As a marine biologist,
00:00:02.032 --> 00:00:05.004
I've spent a lot of time exploring underwater this way.
Duration
5 seconds
Views
13
Timestamp in Movie
00:32:57
Uploaded
Jul 12, 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 • E02 Any anomalies buried below will bounce these waves back - Secrets of the Underground 00:12
Any anomalies buried below will bounce these waves back
S01 • E08 And at first glance, - Secrets of the Underground 00:05
And at first glance,
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 ...