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A million gallons is more than enough
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Secrets of the Underground

A million gallons is more than enough to fill an entireOlympic-sized swimming pool, and...

A million gallons is more than enough to fill an entire
Olympic-sized swimming pool, and that's how much water
is leaving this lake every day

Full Transcript

00:00:01.000 --> 00:00:04.004
A million gallons is more than enough
00:00:04.012 --> 00:00:06.092
to fill an entire Olympic-sized swimming pool,
00:00:07.000 --> 00:00:10.096
and that's how much water is leaving this lake every day.
Duration
11 seconds
Views
25
Timestamp in Movie
00:35:48
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 • E07 Called reflectance Transformation imaging, or rti. - Secrets of the Underground 00:06
Called reflectance Transformation imaging, or rti.
S01 • E02 But the serpent is mostly seen as a foreboding symbol. - Secrets of the Underground 00:04
But the serpent is mostly seen as a foreboding symbol.
S01 • E01 I'm building an impressive list - Secrets of the Underground 00:09
I'm building an impressive list
S01 • E02 Much of Western culture associates it with temptation and evil. - Secrets of the Underground 00:05
Much of Western culture associates it with temptation and ev...
S01 • E03 Now the next question is, where is it all going? - Secrets of the Underground 00:04
Now the next question is, where is it all going?
S01 • E02 And some ancient Native American tribes - Secrets of the Underground 00:06
And some ancient Native American tribes
S01 • E07 Honestly, I don't know Exactly what we're looking at. - Secrets of the Underground 00:05
Honestly, I don't know Exactly what we're looking ...
S01 • E01 Each failed theory is bringing me closer, - Secrets of the Underground 00:08
Each failed theory is bringing me closer,
S01 • E03 Could it be draining into an underground cavern as some locals believe? - Secrets of the Underground 00:05
Could it be draining into an underground cavern as some loca...
S01 • E08 I can make out a series of indentations that could be a carving, - Secrets of the Underground 00:08
I can make out a series of indentations that could be a carv...
S01 • E02 It was a symbol that was to be respected and feared. - Secrets of the Underground 00:04
It was a symbol that was to be respected and feared.
S01 • E03 The lakebed around the leak is very unusual. - Secrets of the Underground 00:04
The lakebed around the leak is very unusual.
S01 • E01 What I really need is to actually see inside one. - Secrets of the Underground 00:04
What I really need is to actually see inside one.
S01 • E02 At the famous Temple Of The Feathered Serpent in Teotihuacan, Mexico, - Secrets of the Underground 00:09
At the famous Temple Of The Feathered Serpent in Teotihuacan...
S01 • E03 It's covered in a field of jagged boulders - Secrets of the Underground 00:07
It's covered in a field of jagged boulders
S01 • E07 Rti is almost known As polynomial texture mapping. - Secrets of the Underground 00:05
Rti is almost known As polynomial texture mapping.
S01 • E08 So I'm going to try out a new piece of technology - Secrets of the Underground 00:10
So I'm going to try out a new piece of technology
S01 • E01 I've got permission to open up a mound on private land, - Secrets of the Underground 00:08
I've got permission to open up a mound on private land,
S01 • E07 It was invented By research scientists in 2001. - Secrets of the Underground 00:04
It was invented By research scientists in 2001.
S01 • E03 The boulder field continues along the ridge to the north of the lake - Secrets of the Underground 00:08
The boulder field continues along the ridge to the north of ...