6:00 AM: Secrets Of The Underground (S2 E4) (S2) | Discovery Science | 10/29 2025 Discovery Science
6:00 AM - 7:00 AM
5 days

Secrets Of The Underground « at 6:00 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.

Secrets Of The Underground next time
Discovery Science
Secrets Of The Underground
Secrets Of The Underground (S1 E4)
America's Buried Massacre
Today 4:00 AM - 5:00 AM | Discovery Science
04:00: Secrets Of The Underground (S1 E4) (Discovery Science)
Discovery Science
Secrets Of The Underground
Secrets Of The Underground (S1 E5)
Rocky Mountain Monsters
24 Oct 5:00 AM - 6:00 AM | Discovery Science
05:00: Secrets Of The Underground (S1 E5) (Discovery Science)
Discovery Science
Secrets Of The Underground
Secrets Of The Underground (S1 E6)
California's Hidden Doomsday
25 Oct 4:00 AM - 5:00 AM | Discovery Science
04:00: Secrets Of The Underground (S1 E6) (Discovery Science)
Discovery Science
Secrets Of The Underground
Secrets Of The Underground (S1 E7)
Secret History of the New World
25 Oct 5:00 AM - 6:00 AM | Discovery Science
05:00: Secrets Of The Underground (S1 E7) (Discovery Science)
Discovery Science
Secrets Of The Underground
Secrets Of The Underground (S1 E8)
Great Lakes Bermuda Triangle
28 Oct 5:00 AM - 6:00 AM | Discovery Science
05:00: Secrets Of The Underground (S1 E8) (Discovery Science)
Discovery Science
Secrets Of The Underground
Secrets Of The Underground (S2 E1)
Legend Of The Nazi Gold
28 Oct 6:00 AM - 7:00 AM | Discovery Science
06:00: Secrets Of The Underground (S2 E1) (Discovery Science)
Discovery Science
Secrets Of The Underground
Secrets Of The Underground (S2 E2)
King Solomon's Treasures
29 Oct 5:00 AM - 6:00 AM | Discovery Science
05:00: Secrets Of The Underground (S2 E2) (Discovery Science)
Discovery Science
Secrets Of The Underground
Secrets Of The Underground (S2 E4)
Doomsday Volcano Mystery
29 Oct 6:00 AM - 7:00 AM | Discovery Science
06:00: Secrets Of The Underground (S2 E4) (Discovery Science)
Discovery Science keyboard_arrow_right
5:00 PM

How the Universe Works (S7 E4)

How the Universe Works (S7 E4)
6:00 PM

How It's Made (S21 E3)

How It's Made (S21 E3)
6:30 PM

How It's Made (S21 E4)

How It's Made (S21 E4)
7:00 PM

How It's Made (S21 E5)

How It's Made (S21 E5)
7:30 PM

How It's Made (S21 E6)

How It's Made (S21 E6)
8:00 PM

How It's Made (S21 E7)

How It's Made (S21 E7)
8:30 PM

How It's Made (S21 E8)

How It's Made (S21 E8)
9:00 PM

How It's Made (S25 E8)

How It's Made (S25 E8)
9:30 PM

How It's Made (S25 E11)

How It's Made (S25 E11)
10:00 PM

How It's Made (S25 E13)

How It's Made (S25 E13)
10:30 PM

How It's Made (S25 E14)

How It's Made (S25 E14)
11:00 PM

How Do They Do It? (S16 E5)

How Do They Do It? (S16 E5)
11:30 PM

How Do They Do It? (S16 E6)

How Do They Do It? (S16 E6)
12:00 AM

How Do They Do It? (S16 E7)

How Do They Do It? (S16 E7)
12:30 AM

How Do They Do It? (S16 E8)

How Do They Do It? (S16 E8)
1:00 AM

How the Universe Works (S7 E2)

How the Universe Works (S7 E2)
2:00 AM

How the Universe Works (S7 E3)

How the Universe Works (S7 E3)
4:00 AM

Secrets Of The Underground (S1 E4)

Secrets Of The Underground (S1 E4)
5:00 AM

Secrets Of The Underground (S1 E5)

Secrets Of The Underground (S1 E5)