An American cowboy living in Mexico discovers his cattle are being eaten by a giant prehistoric dinosaur.
One Day After A Million Years It Came Out Of Hiding To... Kill! Kill! Kill!
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Did You Know?
A Spanish-language version was shot back-to-back with the English-language version. See more
The footage of the stampeding cattle is obviously sped up to enhance the menace. See more
Well, maybe that's your answer. That swamp is a very mysterious and sinister place.