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So I'm turning to geophysicist Dr Mike Feves
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Secrets of the Underground

So I'm turningto geophysicist Dr Mike Feves to help me use powerful technology that should...

So I'm turning
to geophysicist Dr Mike Feves to help me use powerful technology that should be able to detect
clay content

Full Transcript

00:00:01.000 --> 00:00:04.056
So I'm turning to geophysicist Dr Mike Feves
00:00:04.064 --> 00:00:06.006
to help me use powerful technology
00:00:06.068 --> 00:00:09.008
that should be able to detect clay content.
Duration
9 seconds
Views
15
Timestamp in Movie
00:28:52
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 • E07 Using an app on my phone That tracks solar movements, - Secrets of the Underground 00:06
Using an app on my phone That tracks solar movements,
S01 • E08 Brian has been studying this part of the country for decades, - Secrets of the Underground 00:10
Brian has been studying this part of the country for decades...
S01 • E02 And he's been able to uncover clues beneath its surface - Secrets of the Underground 00:06
And he's been able to uncover clues beneath its surface
S01 • E03 If you look at this rock, - Secrets of the Underground 00:09
If you look at this rock,
S01 • E01 It's called electrical resistivity tomography, or ERT. - Secrets of the Underground 00:05
It's called electrical resistivity tomography, or ERT.
S01 • E02 Yet, even he still has a lot to learn about the true purpose - Secrets of the Underground 00:06
Yet, even he still has a lot to learn about the true purpose
S01 • E07 So essentially what We're looking for is the sun. - Secrets of the Underground 00:04
So essentially what We're looking for is the sun.
S01 • E01 ERT is an advanced subsurface imaging technique - Secrets of the Underground 00:07
ERT is an advanced subsurface imaging technique
S01 • E08 Been much higher, and then much lower, - Secrets of the Underground 00:06
Been much higher, and then much lower,
S01 • E03 Scree is a collection of broken rock fragments at the base of mountains or valleys - Secrets of the Underground 00:11
Scree is a collection of broken rock fragments at the base o...
S01 • E01 It works by injecting electrical current into the ground - Secrets of the Underground 00:12
It works by injecting electrical current into the ground
S01 • E02 That's been the challenge for the last 200 years, - Secrets of the Underground 00:06
That's been the challenge for the last 200 years,
S01 • E08 Brian explains that when the glaciers from the last ice age began to melt, - Secrets of the Underground 00:07
Brian explains that when the glaciers from the last ice age ...
S01 • E02 It's probably the most well-known mound - Secrets of the Underground 00:07
It's probably the most well-known mound
S01 • E03 And it could be another clue about the disappearance of the lake. - Secrets of the Underground 00:05
And it could be another clue about the disappearance of the ...
S01 • E08 But when the melting ice exposed a new channel to the St Lawrence River, - Secrets of the Underground 00:08
But when the melting ice exposed a new channel to the St Law...
S01 • E01 Since the conductivity of various materials is different, - Secrets of the Underground 00:12
Since the conductivity of various materials is different,
S01 • E02 Several different native tribes - Secrets of the Underground 00:11
Several different native tribes
S01 • E07 Of this chamber Hovering in the sky above? - Secrets of the Underground 00:04
Of this chamber Hovering in the sky above?
S01 • E07 As the sun rises... Wow, look at that. - Secrets of the Underground 00:04
As the sun rises... Wow, look at that.