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But one stone in particular
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Secrets of the Underground

But one stone in particular has drawn special attentionfrom Mark's team

But one stone in particular has drawn special attention
from Mark's team

Full Transcript

00:00:01.000 --> 00:00:02.076
But one stone in particular
00:00:02.084 --> 00:00:05.028
has drawn special attention from Mark's team...
Duration
5 seconds
Views
15
Timestamp in Movie
00:33:09
Uploaded
Jul 13, 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 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)
S01 • E07 Is recognized universally In christianity. - Secrets of the Underground 00:06
Is recognized universally In christianity.
S01 • E03 If this were to collapse and it could just trap your hand or something... - Secrets of the Underground 00:04
If this were to collapse and it could just trap your hand or...
S01 • E08 But the resolution from the ROV's camera - Secrets of the Underground 00:05
But the resolution from the ROV's camera
S01 • E07 As the name spelled In greek letters - Secrets of the Underground 00:08
As the name spelled In greek letters