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When the adventurers dug into them, though
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Secrets of the Underground

When the adventurers dug into them,though, they found no bones or relics

When the adventurers dug into them,
though, they found no bones or relics

Full Transcript

00:00:01.000 --> 00:00:03.036
When the adventurers dug into them, though,
00:00:03.044 --> 00:00:05.024
they found no bones or relics.
Duration
5 seconds
Views
13
Timestamp in Movie
00:24:56
Uploaded
Jul 09, 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 • E02 This was built in 1889 by a madam named Jennie Rogers. - Secrets of the Underground 00:05
This was built in 1889 by a madam named Jennie Rogers.
S01 • E01 So the mounds don't appear to be graves. - Secrets of the Underground 00:04
So the mounds don't appear to be graves.
S01 • E07 And it's not long before I Uncover an even stranger detail. - Secrets of the Underground 00:06
And it's not long before I Uncover an even stranger det...
S01 • E03 In winter, there's enough rain and snowfall to balance - Secrets of the Underground 00:06
In winter, there's enough rain and snowfall to balance
S01 • E02 And if you look up here at the top, - Secrets of the Underground 00:05
And if you look up here at the top,
S01 • E02 At the very, very top, - Secrets of the Underground 00:05
At the very, very top,
S01 • E08 And just to be clear, guys, it's gonna be the crew and everybody. - Secrets of the Underground 00:04
And just to be clear, guys, it's gonna be the crew and ...
S01 • E07 What we're looking at here Is a tiny crawl space, - Secrets of the Underground 00:08
What we're looking at here Is a tiny crawl space,
S01 • E01 Walking up, down and around these hills - Secrets of the Underground 00:07
Walking up, down and around these hills
S01 • E02 Now, as the rumour shows - Secrets of the Underground 00:09
Now, as the rumour shows
S01 • E03 But Mountain Lake never fluctuated like this, at least in recent memory, - Secrets of the Underground 00:08
But Mountain Lake never fluctuated like this, at least in re...
S01 • E03 Scientists believe it formed roughly 6,000 years ago - Secrets of the Underground 00:09
Scientists believe it formed roughly 6,000 years ago
S01 • E07 That's maybe four feet wide In diameter, - Secrets of the Underground 00:07
That's maybe four feet wide In diameter,
S01 • E08 Mark even makes us surrender our cellphones at the dock - Secrets of the Underground 00:08
Mark even makes us surrender our cellphones at the dock
S01 • E01 Like the Cahokia mounds in Illinois, - Secrets of the Underground 00:24
Like the Cahokia mounds in Illinois,
S01 • E02 Yes, actually, this was the premier brothel. - Secrets of the Underground 00:04
Yes, actually, this was the premier brothel.
S01 • E02 This entire street was known as Holliday Street originally - Secrets of the Underground 00:11
This entire street was known as Holliday Street originally
S01 • E08 These are some pretty serious measures to protect a few submerged stones. - Secrets of the Underground 00:05
These are some pretty serious measures to protect a few subm...
S01 • E03 At 3,800 feet above sea level, - Secrets of the Underground 00:07
At 3,800 feet above sea level,
S01 • E07 For any real purpose, - Secrets of the Underground 00:06
For any real purpose,