Scientists determine source of world's largest mud eruption. More than 11 years after the Lusi mud volcano first erupted on the Indonesian island of Java, researchers may have figured out why the mudflows haven't stopped: deep underground, Lusi is connected to a nearby volcanic system. Source 9l.
Sometime this link will be the outlet to keep the other volcano from erupting and that causing more damage to those around it. Having a mud volcano add to the area can both be good and bad over time. Eleven years is a long eruption but it will fizzle out sooner or later.