'Human error' triggered mud volcano

AlJazeeraEnglish
February 21, 2010
A new study has concluded that a volcanic eruption of mud in Indonesia's east Java was caused by human error.
An international team of scientists says there is no doubt that drilling at a nearby gas well weakened rock formations, triggering the crisis.
The company responsible for the drilling, Lapindo Brantas, claims the problem was caused by an earthquake.