5:00 AM: Secrets Of The Underground (S2 E4) (S2) | Discovery Science | 2/18 2026

5:00 AM - 6:00 AM

3 days

Secrets Of The Underground « at 5:00 AM on Discovery Science

Episode 4

Broadcast info
Published:	2017
Episode:	Doomsday Volcano Mystery

Beneath the densely populated city of Naples lies a looming threat. A super volcano may be on the verge of erupting and cause an apocalyptic catastrophe.

Share on

Facebook

E-mail

Secrets Of The Underground next time

Secrets Of The Underground (S1 E6)

California's Hidden Doomsday

Today 8:00 PM - 9:00 PM | Discovery Channel

20:00: Secrets Of The Underground (S1 E6) (Discovery Channel)

Secrets Of The Underground (S1 E7)

Secret History of the New World

16 Feb 9:00 PM - 10:00 PM | Discovery Channel

21:00: Secrets Of The Underground (S1 E7) (Discovery Channel)

Secrets Of The Underground (S1 E7)

Secret History of the New World

17 Feb 1:00 AM - 2:00 AM | Discovery Channel

01:00: Secrets Of The Underground (S1 E7) (Discovery Channel)

Secrets Of The Underground (S1 E8)

Great Lakes Bermuda Triangle

17 Feb 4:00 AM - 5:00 AM | Discovery Science

04:00: Secrets Of The Underground (S1 E8) (Discovery Science)

Secrets Of The Underground (S2 E1)

Legend Of The Nazi Gold

17 Feb 5:00 AM - 6:00 AM | Discovery Science

05:00: Secrets Of The Underground (S2 E1) (Discovery Science)

Secrets Of The Underground (S2 E2)

King Solomon's Treasures

18 Feb 4:00 AM - 5:00 AM | Discovery Science

04:00: Secrets Of The Underground (S2 E2) (Discovery Science)

Secrets Of The Underground (S2 E4)

Doomsday Volcano Mystery

18 Feb 5:00 AM - 6:00 AM | Discovery Science

05:00: Secrets Of The Underground (S2 E4) (Discovery Science)

Secrets Of The Underground (S2 E5)

Atlantis In America

19 Feb 4:00 AM - 5:00 AM | Discovery Science

04:00: Secrets Of The Underground (S2 E5) (Discovery Science)

Secrets Of The Underground (S2 E6)

Mystery Of The Ice Cave

19 Feb 5:00 AM - 6:00 AM | Discovery Science

05:00: Secrets Of The Underground (S2 E6) (Discovery Science)

Discovery Science keyboard_arrow_right

5:00 AM

Secrets Of The Unde ...

Secrets Of The Underground (S1 E7)

6:00 AM

TELESHOPPING

6:30 AM

TELESHOPPING

7:00 AM

TELESHOPPING

7:30 AM

TELESHOPPING

8:00 AM

Blowing Up History (S4 E5)

9:00 AM

Blowing Up History (S4 E6)

10:00 AM

How It's Made (S24 E14)

10:30 AM

How It's Made (S24 E15)

11:00 AM

How It's Made (S24 E16)

11:30 AM

How It's Made (S24 E17)

12:00 PM

How Do They Do It? (S14 E14)

12:30 PM

How Do They Do It? (S14 E15)

1:00 PM

How Do They Do It? (S14 E16)

1:30 PM

How Do They Do It? (S14 E18)

2:00 PM

Truth Behind the Moon Landing (S1 E3)

3:00 PM

Truth Behind the Moon Landing (S1 E4)

4:00 PM

NASA's Unexplained Files (S3 E4)

5:00 PM

NASA's Unexplained Files (S3 E5)

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 E3)

9:00 PM

Paranormal Declassified (S1 E4)

10:00 PM

Curse of the Bermuda Triangle (S1 E3)

11:00 PM

Curse of the Bermuda Triangle (S1 E4)

12:00 AM

In Search Of Monsters (S1 E3)

1:00 AM

In Search Of Monsters (S1 E4)

2:00 AM

The Alaska Triangle (S1 E5)

4:00 AM

How Do They Do It? (S14 E14)

4:30 AM

How Do They Do It? (S14 E15)

5:00 AM

Secrets Of The Unde ...

Head Office

London

Denmark

Copenhagen

Spain

Barcelona

USA

Los Angeles

Company