World's Biggest Cave

TV SHOWS
- SHOWS BY SUBJECT
- DON'T MISS
- TOP SHOWS
View All Shows
VIDEOS
- - Don't Miss
- Most Viewed
  - How to Make Crack
    Show: Drugs Inc.
  - Brand New Tesla Factory
    Show: Megafactories
  - Inside 9/11: Zero Hour
    Show: Inside 9/11
  - Gender Revolution A Journey with Katie Couric Trailer
    Show: Gender Revolution: A Journey With Katie Couric
  - Kush Royal Cemetery
    Show: Black Pharaohs: Empire of Gold
  - Make It, Take It
    Show: Drugs Inc.
  - Uzbek Hideout
    Show: 21st Century Sex Slaves
  - Growing Up Butterfly
    Show: Great Migrations
  - Semen Slurping Macaque
    Show: World's Weirdest
View All Videos
PHOTOS
- Photo of the day
- Most Viewed
  - Meet the JFK Officers
    Show: To Catch a Smuggler
  - Meet the Tuna.com Crew
    Show: Wicked Tuna
  - Hidden Treasures
    Show: Drain the Oceans
  - Hard Merchandise Crew
    Show: Wicked Tuna
  - Heroin
    Show: Drugs Inc.
  - Travel To Area 51
    Show: Inside Area 51’s Secrets
  - Bounty Hunter Crew
    Show: Wicked Tuna
View all photos
SCHEDULE

https://assets-natgeotv.fnghub.com/Shows/17017.jpg

WORLD'S BIGGEST CAVE

ABOUT THE SHOW

In 2009 a team of British cavers went on an expedition deep within the jungle of central Vietnam. To their amazement they discovered an enormous cave which they believe to be the biggest in the world. The team, the first humans ever to enter the cave, travelled 6 kilometres underground until their way was blocked by a gigantic rock face they dubbed 'The Great Wall of Vietnam'. Now they have returned, but this time with the right equipment to climb the wall and with a geologist and zoologist to discover if this is indeed the Biggest Cave in the World and what secrets lie deep within?