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A million gallons is more than enough
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Secrets of the Underground

A million gallons is more than enough to fill an entireOlympic-sized swimming pool, and...

A million gallons is more than enough to fill an entire
Olympic-sized swimming pool, and that's how much water
is leaving this lake every day

Full Transcript

00:00:01.000 --> 00:00:04.004
A million gallons is more than enough
00:00:04.012 --> 00:00:06.092
to fill an entire Olympic-sized swimming pool,
00:00:07.000 --> 00:00:10.096
and that's how much water is leaving this lake every day.
Duration
11 seconds
Views
25
Timestamp in Movie
00:35:48
Uploaded
Jul 13, 2025
Season
1
Episode
3
Genres

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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...