BBC. January 24, 2007. A mud flow that has displaced thousands of Indonesians was most probably caused by gas drilling, scientists say.

See: Davies, R. J, R. E Swarbrick, R. J Evans, and M. Huuse. 2007. "Birth of a mud volcano: East Java, 29 May 2006." GSA Today 17, no. 2: 4–9.

See below: Hardiyan Digwiyono. (2006). "Children in the Hot Mud Volcanoes". YouTube.

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