It has been nine years since the opening of a mud volcano in Sidoarjo in May 2006. It buried more than 6.5km2 of the city; displaced almost 40,000 people with the costs are estimated at over US$2.7 billion.
We are still wondering what CAUSED this environmental tragedy: triggered by an earthquake or had man-made origins?
In a new journal article published by the journal Nature Geoscience, a University of Adelaide researcher, Dr Mark Tingay, argued that:
The disaster was initiated by a drilling accident.