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What was this Structure used for
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Secrets of the Underground

What was thisStructure used for, Why was it built, And for that matter,Who built it?

What was this
Structure used for, Why was it built, And for that matter,
Who built it?

Full Transcript

00:00:01.000 --> 00:00:02.999
What was this Structure used for,
00:00:03.000 --> 00:00:04.699
Why was it built,
00:00:04.007 --> 00:00:07.299
And for that matter, Who built it?
Duration
7 seconds
Views
16
Timestamp in Movie
00:25:36
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 • E03 So, the fact that this lake even exists here at all - Secrets of the Underground 00:06
So, the fact that this lake even exists here at all
S01 • E03 But the locals whose livelihoods have depended on it for decades - Secrets of the Underground 00:06
But the locals whose livelihoods have depended on it for dec...
S01 • E01 So could there be some other ceremonial or practical purpose - Secrets of the Underground 00:09
So could there be some other ceremonial or practical purpose
S01 • E02 The place did a brisk business, - Secrets of the Underground 00:08
The place did a brisk business,
S01 • E03 That's why when the water disappeared, - Secrets of the Underground 00:10
That's why when the water disappeared,
S01 • E08 I'm on a quest to investigate a mysterious pattern of rocks - Secrets of the Underground 00:10
I'm on a quest to investigate a mysterious pattern of r...
S01 • E02 So, Tracy believes they entered through more innocuous saloons - Secrets of the Underground 00:14
So, Tracy believes they entered through more innocuous saloo...
S01 • E01 Archaeological evidence suggests - Secrets of the Underground 00:07
Archaeological evidence suggests
S01 • E07 Couldn't be, say, A native-american structure? - Secrets of the Underground 00:04
Couldn't be, say, A native-american structure?
S01 • E03 And they came in here with heavy equipment, - Secrets of the Underground 00:07
And they came in here with heavy equipment,
S01 • E01 So if I can find evidence of a clear pattern to the mound placements, - Secrets of the Underground 00:08
So if I can find evidence of a clear pattern to the mound pl...
S01 • E07 The problem With that explanation, - Secrets of the Underground 00:06
The problem With that explanation,
S01 • E08 I've seen the original Stonehenge up close myself. - Secrets of the Underground 00:04
I've seen the original Stonehenge up close myself.
S01 • E03 They dragged down some of the material - Secrets of the Underground 00:09
They dragged down some of the material
S01 • E07 That have been used here, - Secrets of the Underground 00:05
That have been used here,
S01 • E02 Which makes me wonder if that blocked-off tunnel under the Capitol - Secrets of the Underground 00:12
Which makes me wonder if that blocked-off tunnel under the C...
S01 • E08 It's a mysterious site in southwestern England - Secrets of the Underground 00:09
It's a mysterious site in southwestern England
S01 • E07 Some sort of metal tool, - Secrets of the Underground 00:05
Some sort of metal tool,
S01 • E03 At first, it seemed like they had found the magic bullet - Secrets of the Underground 00:06
At first, it seemed like they had found the magic bullet
S01 • E01 It's nearly impossible to see if there's an overarching pattern - Secrets of the Underground 00:06
It's nearly impossible to see if there's an overar...