A popular tourist attraction in Indonesia, this muddy pond erupts with an explosion of mud and a plume of white steam every two minutes and these eruptions also shift positions from time to time. Bledug Kuwu, is the local name for something that burst in a pool and visitors can watch the geyser from a distance of 10-20 meters away.
The unique hydrological phenomenon takes place near the Polish town Wągrowiec. Two rivers – Wełna and Nielba – cross each other without having their waters mixed and continue to flow in separate beds. The researchers have once colored the water of the rivers in different colors and the paint didn’t mix.