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They don't appear to be something that is really natural
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Secrets of the Underground

They don't appear to besomething that is really natural, they appear to be man-made

They don't appear to be
something that is really natural, they appear to be man-made

Full Transcript

00:00:01.000 --> 00:00:03.088
They don't appear to be something that is really natural,
00:00:03.096 --> 00:00:05.084
they appear to be man-made.
Duration
6 seconds
Views
17
Timestamp in Movie
00:16:25
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 • E03 Janet sees compelling evidence that they were inflicted - Secrets of the Underground 00:06
Janet sees compelling evidence that they were inflicted
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 • 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
S01 • E02 This tunnel is heading into the Downtown area, it seems like. - Secrets of the Underground 00:05
This tunnel is heading into the Downtown area, it seems like...
S01 • E03 After the person was dead, this would have shattered the skull. - Secrets of the Underground 00:05
After the person was dead, this would have shattered the sku...
S01 • E01 If it was built originally to a certain thickness, - Secrets of the Underground 00:07
If it was built originally to a certain thickness,
S01 • E07 An imminent eruption scattered Throughout this valley, - Secrets of the Underground 00:06
An imminent eruption scattered Throughout this valley,
S01 • E08 Compiling the data gathered across the rec yard, - Secrets of the Underground 00:09
Compiling the data gathered across the rec yard,
S01 • E03 But no, this just broke the skull, - Secrets of the Underground 00:07
But no, this just broke the skull,
S01 • E02 I'm wondering if it could connect the Capitol to more secret tunnels - Secrets of the Underground 00:10
I'm wondering if it could connect the Capitol to more s...
S01 • E01 It's got multiple layers - Secrets of the Underground 00:05
It's got multiple layers
S01 • E07 Explosive volcanic eruption In north america. - Secrets of the Underground 00:04
Explosive volcanic eruption In north america.
S01 • E07 That mammoth blast 760,000 years ago. - Secrets of the Underground 00:05
That mammoth blast 760,000 years ago.
S01 • E01 So you can't tell if there's a staircase, - Secrets of the Underground 00:06
So you can't tell if there's a staircase,
S01 • E08 It appears as if the hollow pockets running through the rec yard - Secrets of the Underground 00:14
It appears as if the hollow pockets running through the rec ...
S01 • E07 Was so powerful, - Secrets of the Underground 00:10
Was so powerful,
S01 • E02 And if so, what exactly could they be for? - Secrets of the Underground 00:04
And if so, what exactly could they be for?
S01 • E03 It's 40% collagen, so when someone's hit on the head - Secrets of the Underground 00:08
It's 40% collagen, so when someone's hit on the he...
S01 • E01 It seems clear that at some point - Secrets of the Underground 00:09
It seems clear that at some point