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And now I'm investigating an underground link between
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Secrets of the Underground

And now I'm investigatingan underground link between two prominent buildingsin the...

And now I'm investigating
an underground link between two prominent buildings
in the financial district

Full Transcript

00:00:01.000 --> 00:00:04.000
And now I'm investigating an underground link between
00:00:04.008 --> 00:00:06.052
two prominent buildings in the financial district.
Duration
7 seconds
Views
15
Timestamp in Movie
00:24:26
Uploaded
Jul 13, 2025
Season
1
Episode
2
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 • E07 You can look right down Into a cavity right down there. - Secrets of the Underground 00:05
You can look right down Into a cavity right down there.
S01 • E01 This mysterious landscape is so bizarre, - Secrets of the Underground 00:07
This mysterious landscape is so bizarre,
S01 • E03 I'd searched for other lakes that might offer a clue - Secrets of the Underground 00:07
I'd searched for other lakes that might offer a clue
S01 • E08 If you don't go through Mark Holley, you don't see the site. - Secrets of the Underground 00:04
If you don't go through Mark Holley, you don't see...
S01 • E02 But I'm still not sure what it adds up to, - Secrets of the Underground 00:05
But I'm still not sure what it adds up to,
S01 • E07 Here, let's go down Right through here, - Secrets of the Underground 00:05
Here, let's go down Right through here,
S01 • E01 That might be a stretch, - Secrets of the Underground 00:06
That might be a stretch,
S01 • E03 Last winter, it was one-and-a-half times bigger than Mountain Lake, - Secrets of the Underground 00:09
Last winter, it was one-and-a-half times bigger than Mountai...
S01 • E08 Having granted me special access, - Secrets of the Underground 00:10
Having granted me special access,
S01 • E02 Then a friend texts me - Secrets of the Underground 00:11
Then a friend texts me
S01 • E01 When early explorers happened upon this spot in 1841, - Secrets of the Underground 00:14
When early explorers happened upon this spot in 1841,
S01 • E03 The reason? Multiple openings in the lake bed - Secrets of the Underground 00:07
The reason? Multiple openings in the lake bed
S01 • E07 My gosh. This is a structure. - Secrets of the Underground 00:05
My gosh. This is a structure.
S01 • E02 Namely, why is there a sealed-off tunnel - Secrets of the Underground 00:06
Namely, why is there a sealed-off tunnel
S01 • E08 The site that we're looking at is possibly a ceremonial site. - Secrets of the Underground 00:06
The site that we're looking at is possibly a ceremonial...
S01 • E03 But there are fundamental differences between Lost Lake and Mountain Lake. - Secrets of the Underground 00:05
But there are fundamental differences between Lost Lake and ...
S01 • E07 That's what we saw right there. That was the window. - Secrets of the Underground 00:05
That's what we saw right there. That was the window.
S01 • E02 As it turns out, - Secrets of the Underground 00:08
As it turns out,
S01 • E03 Lost Lake goes through the same cycle every year. - Secrets of the Underground 00:04
Lost Lake goes through the same cycle every year.
S01 • E07 As I explore This bizarre structure, - Secrets of the Underground 00:06
As I explore This bizarre structure,