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Within the boundaries Of this ancient supervolcano
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Secrets of the Underground

Within the boundariesOf this ancient supervolcano

Within the boundaries
Of this ancient supervolcano

Full Transcript

00:00:01.000 --> 00:00:04.669
Within the boundaries Of this ancient supervolcano.
Duration
5 seconds
Views
19
Timestamp in Movie
00:16:01
Uploaded
Jul 13, 2025
Season
1
Episode
7
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 • E01 I'm going to run a vertical stripe from here over. - Secrets of the Underground 00:05
I'm going to run a vertical stripe from here over.
S01 • E08 Here to the top, roughly about, what is that, six inches? Yeah. - Secrets of the Underground 00:04
Here to the top, roughly about, what is that, six inches? Ye...
S01 • E07 To do that, I need to know What's going on underground. - Secrets of the Underground 00:05
To do that, I need to know What's going on underground.
S01 • E08 The question is, does this opening connect to the main cellblock - Secrets of the Underground 00:09
The question is, does this opening connect to the main cellb...
S01 • E02 Put a point right there and we'll do the same thing down here - Secrets of the Underground 00:06
Put a point right there and we'll do the same thing dow...
S01 • E03 One of the skulls shows a very distinct hole. - Secrets of the Underground 00:05
One of the skulls shows a very distinct hole.
S01 • E01 You do have some type of anomaly down here, - Secrets of the Underground 00:06
You do have some type of anomaly down here,
S01 • E02 Let's go and have you move 80ft down that tunnel. - Secrets of the Underground 00:05
Let's go and have you move 80ft down that tunnel.
S01 • E03 We found metal fragments inside of the skull. No way. Really? - Secrets of the Underground 00:04
We found metal fragments inside of the skull. No way. Really...
S01 • E08 We've got a perfect line going right to that cellblock. - Secrets of the Underground 00:04
We've got a perfect line going right to that cellblock.
S01 • E01 Our GPR data reveals some curious irregularities - Secrets of the Underground 00:06
Our GPR data reveals some curious irregularities
S01 • E08 All of these anomalies that we're finding - Secrets of the Underground 00:06
All of these anomalies that we're finding
S01 • E03 So, we do know that it was a bullet hole. Really? Absolutely. - Secrets of the Underground 00:05
So, we do know that it was a bullet hole. Really? Absolutely...
S01 • E03 This is actually probably an axe wound. - Secrets of the Underground 00:04
This is actually probably an axe wound.
S01 • E07 I'm in mammoth lakes, California, - Secrets of the Underground 00:09
I'm in mammoth lakes, California,
S01 • E08 They don't appear to be something that is really natural, - Secrets of the Underground 00:06
They don't appear to be something that is really natura...
S01 • E01 What I interpret from the data you've scanned - Secrets of the Underground 00:06
What I interpret from the data you've scanned
S01 • E03 Janet sees compelling evidence that they were inflicted - Secrets of the Underground 00:06
Janet sees compelling evidence that they were inflicted
S01 • E02 I'm standing maybe 200ft away from the Capitol building. - Secrets of the Underground 00:04
I'm standing maybe 200ft away from the Capitol building...
S01 • E08 It looks like it could be a tunnel - Secrets of the Underground 00:06
It looks like it could be a tunnel