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What I'm doing at the moment is adding benzonite
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Secrets of the Underground

What I'm doing at the momentis adding benzonite, a mineral that looks a little bitlike...

What I'm doing at the moment
is adding benzonite, a mineral that looks a little bit
like rock

Full Transcript

00:00:01.000 --> 00:00:04.048
What I'm doing at the moment is adding benzonite,
00:00:04.056 --> 00:00:06.052
a mineral that looks a little bit like rock.
Duration
7 seconds
Views
13
Timestamp in Movie
00:30:08
Uploaded
Jul 13, 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 • E08 We're at the very lip of a very steep embankment. - Secrets of the Underground 00:05
We're at the very lip of a very steep embankment.
S01 • E02 But, in fact, Native Americans, like Europeans, - Secrets of the Underground 00:07
But, in fact, Native Americans, like Europeans,
S01 • E01 It'll basically increase the conductivity, - Secrets of the Underground 00:11
It'll basically increase the conductivity,
S01 • E08 Lake Michigan is less than a quarter of a mile to our west. - Secrets of the Underground 00:05
Lake Michigan is less than a quarter of a mile to our west.
S01 • E03 That suggests at least part of this lake - Secrets of the Underground 00:06
That suggests at least part of this lake
S01 • E08 If you were standing here 4,500 years ago, - Secrets of the Underground 00:06
If you were standing here 4,500 years ago,
S01 • E02 Evolving from nomadic wanderers - Secrets of the Underground 00:08
Evolving from nomadic wanderers
S01 • E03 So we've moved the ROV from the old funnels that were repaired. - Secrets of the Underground 00:05
So we've moved the ROV from the old funnels that were r...
S01 • E08 To give me a better visual understanding on how lake levels have changed over time, - Secrets of the Underground 00:08
To give me a better visual understanding on how lake levels ...
S01 • E01 The thing is, this has never been done before out here. - Secrets of the Underground 00:04
The thing is, this has never been done before out here.
S01 • E02 And that evolution is clear in the second native culture - Secrets of the Underground 00:09
And that evolution is clear in the second native culture
S01 • E01 With the stakes in place, we run our cable - Secrets of the Underground 00:07
With the stakes in place, we run our cable
S01 • E03 ..a fast-moving flow of water that looks like it leads to an opening. - Secrets of the Underground 00:05
..a fast-moving flow of water that looks like it leads to an...
S01 • E07 Better known on the christian Calendar as easter. - Secrets of the Underground 00:06
Better known on the christian Calendar as easter.
S01 • E08 If you look at the type of beach, the rocks, - Secrets of the Underground 00:15
If you look at the type of beach, the rocks,
S01 • E02 They lived in this area from about 1000AD to 1750AD, - Secrets of the Underground 00:10
They lived in this area from about 1000AD to 1750AD,
S01 • E03 It looks like Mountain Lake is still vanishing right before our eyes. - Secrets of the Underground 00:06
It looks like Mountain Lake is still vanishing right before ...
S01 • E01 OK. I'm hoping it shows something, gives us some reading, - Secrets of the Underground 00:07
OK. I'm hoping it shows something, gives us some readin...
S01 • E02 It seems conceivable that they would have been capable - Secrets of the Underground 00:06
It seems conceivable that they would have been capable
S01 • E03 I think we've found a place - Secrets of the Underground 00:05
I think we've found a place