SIDOARJO, EAST JAVA, INDONESIA - MAY 30:  Children play with a kite near of mud volcano 'Lusi' on May 30, 2010 in the subdistrict of Porong in Sidoarjo, East Java, Indonesia. Mud and gases continue to spew from Lusi four years after it first erupted, suspected to be triggered by the drilling activities of Indonesian oil and gas exploration company Lapindo Brantas. The initial eruption engulfed entire communities, wiping out villages and killing 13 people. Mud flow from the volcano continues at a rate of up to 150,000m3 per day, and to date has displaced tens of thousands of people.  (Photo by Ulet Ifansasti/Getty Images)