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I think we can say, Without much doubt
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Secrets of the Underground

I think we can say,Without much doubt, That this particular hot spring

I think we can say,
Without much doubt, That this particular hot spring

Full Transcript

00:00:01.000 --> 00:00:03.499
I think we can say, Without much doubt,
00:00:03.005 --> 00:00:05.369
That this particular hot spring.
Duration
5 seconds
Views
17
Timestamp in Movie
00:09:27
Uploaded
Jul 13, 2025
Season
1
Episode
7
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 So far, a team of historians and scientists - Secrets of the Underground 00:11
So far, a team of historians and scientists
S01 • E08 All right, ready to get this powered up? Yep. - Secrets of the Underground 00:04
All right, ready to get this powered up? Yep.
S01 • E02 I'm gonna run a pair of high-tech experiments there - Secrets of the Underground 00:06
I'm gonna run a pair of high-tech experiments there
S01 • E08 Stefan and I are using a type of GPR - Secrets of the Underground 00:06
Stefan and I are using a type of GPR
S01 • E01 While Capone may have liked doing business at the Seelbach - Secrets of the Underground 00:12
While Capone may have liked doing business at the Seelbach
S01 • E02 How is there no map of the tunnel system here? - Secrets of the Underground 00:04
How is there no map of the tunnel system here?
S01 • E03 Geophysicist Tim Bechtel suspects that in the 1870s, - Secrets of the Underground 00:11
Geophysicist Tim Bechtel suspects that in the 1870s,
S01 • E07 Or is it the tip Of a supervolcanic iceberg? - Secrets of the Underground 00:04
Or is it the tip Of a supervolcanic iceberg?
S01 • E02 I'll travel to the Buckeye State - Secrets of the Underground 00:07
I'll travel to the Buckeye State
S01 • E08 It will tell us if there are any changes in depth - Secrets of the Underground 00:07
It will tell us if there are any changes in depth
S01 • E07 In other parts Of the 200-square mile cauldron. - Secrets of the Underground 00:04
In other parts Of the 200-square mile cauldron.
S01 • E01 He preferred the gentlemen's poker room, which was more private. - Secrets of the Underground 00:04
He preferred the gentlemen's poker room, which was more...
S01 • E02 Will ground penetrating radar reveal that human remains are buried inside? - Secrets of the Underground 00:05
Will ground penetrating radar reveal that human remains are ...
S01 • E03 And they hit the mass grave and that would have freaked them out. - Secrets of the Underground 00:05
And they hit the mass grave and that would have freaked them...
S01 • E01 But it was on the second floor, - Secrets of the Underground 00:07
But it was on the second floor,
S01 • E08 Right up here looks fairly...clear, - Secrets of the Underground 00:07
Right up here looks fairly...clear,
S01 • E03 If we can figure out where the missing men were moved to, - Secrets of the Underground 00:10
If we can figure out where the missing men were moved to,
S01 • E07 Just across the valley From hot creek, - Secrets of the Underground 00:04
Just across the valley From hot creek,
S01 • E01 If police raided the hotel looking for Capone, which they often did, - Secrets of the Underground 00:09
If police raided the hotel looking for Capone, which they of...
S01 • E08 Oh, look, there you go, you can see something right there. - Secrets of the Underground 00:05
Oh, look, there you go, you can see something right there.