Blue holes are underwater caves that can go hundreds, or even
thousands, of feet down and feature a maze of passages and tunnels
that act as liquid time capsules. National Geographic explorer and
anthropologist Kenny Broad leads a team of divers and
archaeologists to investigate these caves and unlock the mysteries
of the ancient Bahamas, once teeming with life that quickly
vanished. What caused these animals to disappear, and could
800-year-old human skulls provide the answer? Cave-ins, poisonous
gasses, and the potentially deadly effects from depth pressure make
cave diving a very dangerous sport - a lesson the team learns
firsthand.
General
Studio: |
National Geographic
|
Country of origin: |
South Africa |
Release date: |
June 2010 |
Dimensions: |
192 x 137 x 15mm (L x W x T) |
Format: |
|
Categories: |
DVD >
Documentary >
Special Interest
Music
|
LSN: |
X5W-TM9-NFH-1 |
Barcode: |
6009700310451 |
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