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Each hammer hit is meant to represent a seismic event
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Secrets of the Underground

Each hammer hit is meantto represent a seismic event

Each hammer hit is meant
to represent a seismic event

Full Transcript

00:00:01.000 --> 00:00:04.028
Each hammer hit is meant to represent a seismic event.
Duration
4 seconds
Views
18
Timestamp in Movie
00:32:45
Uploaded
Jul 13, 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 • E07 These are ogom Or ogham letters. - Secrets of the Underground 00:05
These are ogom Or ogham letters.
S01 • E01 It's making the board shake - Secrets of the Underground 00:07
It's making the board shake
S01 • E02 This is the GPR unit, ground penetrating radar. - Secrets of the Underground 00:05
This is the GPR unit, ground penetrating radar.
S01 • E08 The ROV gives me a much closer look at the site than the radar scans. - Secrets of the Underground 00:06
The ROV gives me a much closer look at the site than the rad...
S01 • E03 I can just wiggle a little bit, but I can't get out. - Secrets of the Underground 00:04
I can just wiggle a little bit, but I can't get out.
S01 • E07 Because it's easy To chisel into wood, - Secrets of the Underground 00:06
Because it's easy To chisel into wood,
S01 • E02 Ground penetrating radar fires energy waves under the surface. - Secrets of the Underground 00:05
Ground penetrating radar fires energy waves under the surfac...
S01 • E03 Let me give a tug on the umbilical and see if we can get you free. - Secrets of the Underground 00:05
Let me give a tug on the umbilical and see if we can get you...
S01 • E01 Oh my gosh! Look at that! - Secrets of the Underground 00:05
Oh my gosh! Look at that!
S01 • E08 As a marine biologist, - Secrets of the Underground 00:05
As a marine biologist,
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.