
Preview | Graveyard of the Giant Beasts
Preview: Season 15 Episode 5 | 30sVideo has Closed Captions
Follow scientists trying to determine which giant animal was the apex predator
A mining operation in Cerrejon, Northern Colombia, opened a window onto a previously unknown period of the earth’s history and a world teeming with giant creatures emerged. The biggest of all was Titanoboa a 43-foot snake, the largest that ever lived. But new discoveries in Cerrejon suggest that Titanoboa’s rule was challenged by a giant crocodilian.
SECRETS OF THE DEAD is made possible, in part, by public television viewers.

Preview | Graveyard of the Giant Beasts
Preview: Season 15 Episode 5 | 30sVideo has Closed Captions
A mining operation in Cerrejon, Northern Colombia, opened a window onto a previously unknown period of the earth’s history and a world teeming with giant creatures emerged. The biggest of all was Titanoboa a 43-foot snake, the largest that ever lived. But new discoveries in Cerrejon suggest that Titanoboa’s rule was challenged by a giant crocodilian.
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Providing Support for PBS.org
Learn Moreabout PBS online sponsorship- [Narrator] On "Secrets of the Dead"... 58 million years ago, two giants engaged in an epic battle.
- [scientist 1] I had all kinds of wild ideas right away about how large that snake would've been.
- [scientist 2] This animal was almost 50 feet long.
- [scientist 3] The Cerrejon croc gets bigger than any crocodile that we have alive today.
- This animal essentially became dinosaur size.
- [Narrator] Which beast won the battle?
"Graveyard of the Giant Beasts," on "Secrets of the Dead."
[dramatic music]
Bite Force of the Cerrejón Crocodile
Video has Closed Captions
Scientists estimate the power of the Cerrejón crocodile's monstrous bite (3m 3s)
Discovery of the Giant Snake, Titanoboa
Video has Closed Captions
Experts examined the bones of a giant snake they discovered at the Cerrejón mine. (3m 39s)
Which Giant Animal Was the Apex Predator?
Video has Closed Captions
Follow scientists trying to determine which giant animal was the apex predator (1m 33s)
Providing Support for PBS.org
Learn Moreabout PBS online sponsorshipSECRETS OF THE DEAD is made possible, in part, by public television viewers.