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And we know from our ERT test
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Secrets of the Underground

And we know from our ERT test that there's harder material beneaththe entire Mima Mound...

And we know from our ERT test that there's harder material beneath
the entire Mima Mound area

Full Transcript

00:00:01.000 --> 00:00:02.084
And we know from our ERT test
00:00:02.092 --> 00:00:06.092
that there's harder material beneath the entire Mima Mound area.
Duration
7 seconds
Views
13
Timestamp in Movie
00:41:32
Uploaded
Jul 10, 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 I can make a plausible argument that it's a hunting structure - Secrets of the Underground 00:08
I can make a plausible argument that it's a hunting str...
S01 • E02 Sometimes you have to step back, get a bigger perspective. - Secrets of the Underground 00:06
Sometimes you have to step back, get a bigger perspective.
S01 • E03 I grab a sample from the stream to compare it to the lake water... - Secrets of the Underground 00:05
I grab a sample from the stream to compare it to the lake wa...
S01 • E07 Than I could have imagined. - Secrets of the Underground 00:05
Than I could have imagined.
S01 • E01 Now I can also see it, below the layer of larger stone. - Secrets of the Underground 00:05
Now I can also see it, below the layer of larger stone.
S01 • E02 All right, we're gonna launch this thing, get a drone's-eye view. - Secrets of the Underground 00:04
All right, we're gonna launch this thing, get a drone&#...
S01 • E08 Dr O'Shea explains that drive lanes had been used by hunters - Secrets of the Underground 00:11
Dr O'Shea explains that drive lanes had been used by hu...
S01 • E01 And I can't imagine a gopher being able to burrow through it. - Secrets of the Underground 00:04
And I can't imagine a gopher being able to burrow throu...
S01 • E03 The pH levels of the two samples are a match. - Secrets of the Underground 00:05
The pH levels of the two samples are a match.
S01 • E01 Jennifer tells me this area used to have a high water table, - Secrets of the Underground 00:08
Jennifer tells me this area used to have a high water table,
S01 • E02 The missing coil would have been here just behind the head. - Secrets of the Underground 00:05
The missing coil would have been here just behind the head.
S01 • E03 And more tellingly, so are the TDS levels, - Secrets of the Underground 00:08
And more tellingly, so are the TDS levels,
S01 • E07 Is you have this kind of Chamber-like thing right here. - Secrets of the Underground 00:05
Is you have this kind of Chamber-like thing right here.
S01 • E02 With limited manpower and primitive tools, - Secrets of the Underground 00:10
With limited manpower and primitive tools,
S01 • E08 I'd like to show you one that is still used to this day. - Secrets of the Underground 00:05
I'd like to show you one that is still used to this day...
S01 • E01 But still, is it really possible for such tiny critters - Secrets of the Underground 00:07
But still, is it really possible for such tiny critters
S01 • E07 Now, around the window, two Slashes, a space, and a slash. - Secrets of the Underground 00:06
Now, around the window, two Slashes, a space, and a slash.
S01 • E03 Typically, water emerging from underground - Secrets of the Underground 00:09
Typically, water emerging from underground
S01 • E08 This is the Eggington drive lane in northern Canada. - Secrets of the Underground 00:04
This is the Eggington drive lane in northern Canada.
S01 • E08 And you see this line of stones behind the hunter, - Secrets of the Underground 00:07
And you see this line of stones behind the hunter,