The waters of the lagoon is so intense red that it seems like ink or blood.
That’s why nobody knows where it is exactly and it does not appear on maps.
The disappearance of thousands of Aymaras is also attributed to this lake because they drank from its waters.
it is therefore common belief that these accumulations of colored water are owned by the devil himself.
According to a few experts the color is due to different species of algae living in its depths.
Sources:Metropolitan Touring,Wikipedia.