But now local villagers living along the Baleh river in Borneo believe the mythical creature has returned after this photo of a gigantic snake swimming along the remote waterways has emerged.
The picture, taken by a member of a disaster team monitoring flood regions by helicopter, has sparked a huge debate about whether the photos are genuine or merely the work of photo-editing software.
Borneo's Nessie: The image that sparked fears a giant serpent was stalking the river BalehVillagers who claim to have seen the snake say they have given it the name of Nabau, after an ancient sea serpent which can transform itself into the shapes of different animals.
People who have studied the photograph of the shape taken from the air have dismissed suggestions that it's a log.
As one writer asked: 'A log can't be that winding, can it?' Others have suggested it's a speedboat, but this has been dismissed because of the twisting wake.
The most common accusation is that the photo has simply been manipulated on a computer, while others complain that the river is a different colour to the real Baleh rover which is a murky brown.
Mythical: A second frame appears to show something snake-like in the water off a remote villageEarlier this month scientists unearthed the fossil of a killer snake that was longer than a bus, as heavy as a small car and which could swallow an animal the size of a cow.
The 45ft long monster - named Titanoboa - was so big that it lived on a diet of crocodiles and giant turtles, squeezing them to death and devouring them whole.
Weighing an impressive 1.25 tons, it slithered around the tropical forests of South America 60million years ago, just five million years after the last dinosaurs were wiped out.
Partial skeletons of the boa constrictor-like prehistoric killer were found in a Colombian coal mine by an international team of fossil hunters.



