4:00 AM: Secrets Of The Underground (S1 E1) (S1) | Discovery Science | 2/12 2026

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Secrets Of The Underground « at 4:00 AM on Discovery Science

Episode 1

Broadcast info
Published:	2017
Episode:	American Stonehenge

Rob Nelson investigates the mysterious rocks at the bottom of Lake Michigan known as Underwater Stonehenge. Plus, the search for escape tunnels in Alcatraz.

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6:30 AM

TELESHOPPING

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7:30 AM

TELESHOPPING

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Blowing Up History (S4 E1)

9:00 AM

Blowing Up History (S4 E2)

10:00 AM

How It's Made (S24 E1)

10:30 AM

How It's Made (S24 E2)

11:00 AM

How It's Made (S24 E3)

11:30 AM

How It's Made (S24 E4)

12:00 PM

How Do They Do It? (S14 E1)

12:30 PM

How Do They Do It? (S14 E2)

1:00 PM

How Do They Do It? (S14 E3)

1:30 PM

How Do They Do It? (S14 E4)

2:00 PM

Truth Behind the Moon Landing (S1 E1)

3:00 PM

Truth Behind the Moon Landing (S1 E2)

4:00 PM

NASA's Unexplained Files (S3 E2)

5:00 PM

NASA's Unexplained Files (S3 E3)

6:00 PM

How It's Made (S24 E1)

6:30 PM

How It's Made (S24 E2)

7:00 PM

How It's Made (S24 E3)

7:30 PM

How It's Made (S24 E4)

8:00 PM

Paranormal Declassified (S1 E1)

9:00 PM

Paranormal Declassified (S1 E2)

10:00 PM

Curse of the Bermuda Triangle (S1 E1)

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Curse of the Bermuda Triangle (S1 E2)

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In Search Of Monsters (S1 E1)

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In Search Of Monsters (S1 E2)

2:00 AM

The Alaska Triangle (S1 E3)

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How Do They Do It? (S14 E1)

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How Do They Do It? (S14 E2)

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