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The GPR is telling us there's definitely something other than soil
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Secrets of the Underground

The GPR is telling us there'sdefinitely something other than soil under the mound here

The GPR is telling us there's
definitely something other than soil under the mound here

Full Transcript

00:00:01.000 --> 00:00:04.048
The GPR is telling us there's definitely something other than soil
00:00:04.559 --> 00:00:05.096
under the mound here.
Duration
6 seconds
Views
23
Timestamp in Movie
00:34:26
Uploaded
Jul 09, 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 • E03 I have to work the sub loose without dislodging any boulders. - Secrets of the Underground 00:04
I have to work the sub loose without dislodging any boulders...
S01 • E07 With only leather, wood, And primitive tools. - Secrets of the Underground 00:04
With only leather, wood, And primitive tools.
S01 • E01 I'm heading to meet Dr John Vidale, - Secrets of the Underground 00:08
I'm heading to meet Dr John Vidale,
S01 • E02 Has anybody found any indications of burial mounds? - Secrets of the Underground 00:04
Has anybody found any indications of burial mounds?
S01 • E07 Shockingly, he completed The 4,500 miles voyage, - Secrets of the Underground 00:08
Shockingly, he completed The 4,500 miles voyage,
S01 • E03 One wrong move could trap the ROV or me underneath. - Secrets of the Underground 00:05
One wrong move could trap the ROV or me underneath.
S01 • E08 I'm descending to the bottom of Lake Michigan to get a closer look - Secrets of the Underground 00:10
I'm descending to the bottom of Lake Michigan to get a ...
S01 • E01 In this particular area, - Secrets of the Underground 00:07
In this particular area,
S01 • E02 But Jarrod tells me he's seen similar anomalies - Secrets of the Underground 00:06
But Jarrod tells me he's seen similar anomalies
S01 • E07 Is this archaeological evidence That will rewrite history, - Secrets of the Underground 00:07
Is this archaeological evidence That will rewrite history,
S01 • E02 And taken as a whole, their pattern and scale - Secrets of the Underground 00:10
And taken as a whole, their pattern and scale
S01 • E08 At first, I expected this peculiar-shaped formation - Secrets of the Underground 00:09
At first, I expected this peculiar-shaped formation
S01 • E03 You could lose a lot of water in a lake like this - Secrets of the Underground 00:07
You could lose a lot of water in a lake like this
S01 • E07 To get a better look, I'm going To deploy a new technology. - Secrets of the Underground 00:04
To get a better look, I'm going To deploy a new technol...
S01 • E01 So could big earthquakes lead to big mounds? - Secrets of the Underground 00:04
So could big earthquakes lead to big mounds?
S01 • E01 I tell John about my findings using the board, hammer and sand. - Secrets of the Underground 00:05
I tell John about my findings using the board, hammer and sa...
S01 • E02 So, stone would make a radar anomaly like that. - Secrets of the Underground 00:05
So, stone would make a radar anomaly like that.
S01 • E03 Enough to offset the inflow from rainfall and runoff - Secrets of the Underground 00:07
Enough to offset the inflow from rainfall and runoff
S01 • E08 For one thing, the geological record indicates this site, - Secrets of the Underground 00:10
For one thing, the geological record indicates this site,
S01 • E03 I think the next step is to get some sort of flow meter in there - Secrets of the Underground 00:07
I think the next step is to get some sort of flow meter in t...