is one of tourist attractions in Wirosari area in Grobogan Region, Purwodadi, Central Java. is a local name for something that burst in pool. This is rather strange pool that far from volcano. The vapor burst came from carbon dioxide release. The temperature is mild. Visitors might experience a stunning natural occurrence of small, frequent bursts from mud crate with a sound resembling a mount eruption. This natural phenomenon is resulted from geothermal motion inside the earth bed. Witness said that a big burst could even create small quakes that quiver the area.
looks like just another muddy pond. But every one or two minutes, the placid water erupts in an explosion of mud, followed by a plume of white steam. The pond is located just off the alternative road connecting Purwodadi and Cepu in Central Java, on a site measuring some 4.5 hectares. has become a tourist attraction in the area. The visitors can watch the geyser from a distance of between 10 meters and 20 meters. The eruptions of water and mud shift positions from time to time. But there are two spots where the geyser regularly erupts. The locals call the one in the east Mbah (Grandpa) Jokotua and the one in the west Mbah (Grandma) Rodenok. They have given the spots where the geyser erupts names, as they believe that the place is sacred.