Bleduk Kuwu is a crater of mud in Wirosari area in Grobogan Region, Purwodadi, Central Java.
For local people, bledug means explosion and kuwu or kuwur means to be scattered.
The place has been a tourist destination for decades.
People living near this site make money by selling salt to visitors.
The salt is harvested from volcanic sediment that is dried in an open field.
Visitors can watch the geyser from a distance of between 10 meters and 20 meters.
The natural phenomenon is triggered by the release of gas, usually methane, from inside the earth bed.
Sources:Wikipedia,Indonesia-Tourism,Jakarta Post
