What on Earth? The Cave to Hell (Season 6, Episode 5)
TV-PG
TV Episode | 42 min | Documentary

What on Earth?

The Cave to Hell (Season 6, Episode 5)

TV-PG

TV Episode | 42 min | Documentary

When a sinister cave is discovered in a remote corner of Iceland, experts uncover a secret underworld tunneling to unknown depths, and using cutting-edge tech, they investigate if this strange place could hold secrets of alien worlds.

Directors

Bella Falk | Lauren Hawthorne | Rory Kaufhold | Charlotte Evans & 2 more

Producer

Bella Falk

Cinematographers

Richard Ashdown | Jack Burton | Tony Mewse | Orlando Stuart | Peter Thorn

Editors

Mark Lovegrove | Rupert Sewell | Guy Yorke-Wilkinson

See all filmmakers & crew (34)

Edit Released

Updated Jul 11, 2019

Release date

Jul 11, 2019 (United States)

Contacts

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Cast	+ Add Cast
22 cast members

Name	Known for
Mark Altaweel Self - Archaeologist Self - Archaeologist See fewer	Egypt's Unexplained Files (2019)
Mike Baker Self - Former CIA Operative Self - Former CIA Operative See fewer	What on Earth? (2015)
Karen Bellinger Self / PhD, Archeologist Self / PhD, Archeologist See fewer	What on Earth? (2015)
Haley Chamberlain Self - Science Journalist Self - Science Journalist See fewer	Strange Evidence (2017)
Devin Dennie Self - Geologist Self - Geologist See fewer	What on Earth? (2015)
Sheila Hoffman Self - Archaeologist Self - Archaeologist See fewer	What on Earth? (2015)
Mark Horton Self - Archaeologist Self - Archaeologist See fewer	Conspiracies Decoded (2020)
Klint Janulis Self - Archaeologist Self - Archaeologist See fewer	Surviving the Stone Age: Adventure to the Wild (2020)
Roland Kays Self - Biologist Self - Biologist See fewer	What on Earth? (2015)
Pascal Lee Self - Planetary Scientist Self - Planetary Scientist See fewer	Passage to Mars (2016)
Alan Lester Self - Geologist Self - Geologist See fewer	How the Earth Works (2013)
Amanda Marchetti Self - Image Analyst, Digitalglobe Self - Image Analyst, Digitalglobe See fewer	Secret Space Escapes (2015)
Lindsay Moran Self - Former CIA Operative Self - Former CIA Operative See fewer	The Honey Trap (2024)
Martin K.A. Morgan Self - Historian (as Martin Morgan) Self - Historian (as Martin Morgan) See fewer	Medal of Honor: Airborne (2007)
Carlo Munoz Self - Military Correspondent Self - Military Correspondent See fewer	What on Earth? (2015)
Rob Nelson Self - Biologist Self - Biologist See fewer	What on Earth? (2015)
Kieran O'Brien Self - Narrator Self - Narrator See fewer	Years and Years (2019)
Joe Pappalardo Self - Aerospace Journalist Self - Aerospace Journalist See fewer	The Proof Is Out There: Military Mysteries (2024)
Katie Paul Self - Anthropologist Self - Anthropologist See fewer	Artifact War (2024)
Mike Pavelec Self - Military Historian Self - Military Historian See fewer	Conspiracies Decoded (2020)
Stephanie Schuttler Self - Wildlife Biologist Self - Wildlife Biologist See fewer	Expedition X (2020)
Don Vaughn Self - Neuroscientist Self - Neuroscientist See fewer	What on Earth? (2015)