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At 3,800 feet above sea level
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Secrets of the Underground

At 3,800 feet above sea level, Mountain Lake is the highest naturallake east of the...

At 3,800 feet above sea level, Mountain Lake is the highest natural
lake east of the Mississippi

Full Transcript

00:00:01.000 --> 00:00:03.016
At 3,800 feet above sea level,
00:00:03.024 --> 00:00:07.008
Mountain Lake is the highest natural lake east of the Mississippi.
Duration
7 seconds
Views
23
Timestamp in Movie
00:25:28
Uploaded
Jul 13, 2025
Season
1
Episode
3
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 • E08 So, I can't help but wonder, - Secrets of the Underground 00:05
So, I can't help but wonder,
S01 • E07 For any real purpose, - Secrets of the Underground 00:06
For any real purpose,
S01 • E03 Most lakes in this region are much closer to sea level. - Secrets of the Underground 00:05
Most lakes in this region are much closer to sea level.
S01 • E02 It turns out that the first floor of the brothel was a restaurant - Secrets of the Underground 00:08
It turns out that the first floor of the brothel was a resta...
S01 • E08 But before I find out, it's time to cut the cameras. - Secrets of the Underground 00:04
But before I find out, it's time to cut the cameras.
S01 • E07 What was this Structure used for, - Secrets of the Underground 00:07
What was this Structure used for,
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 • 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 • E03 And they came in here with heavy equipment, - Secrets of the Underground 00:07
And they came in here with heavy equipment,
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