Lapindo Mud

According to wikipedia.
The Sidoarjo mud flow or
Lapindo mud, also informally
abbreviated as Lusi, a
contraction of Lumpur Sidoarjo
(lumpur is the Indonesian word
for mud), is a mud volcano[1] in
the subdistrict of Porong,
Sidoarjo in East Java, Indonesia
that has been ongoing since May
2006. The mud volcano was
created by the blowout of a
natural gas well drilled by PT
Lapindo Brantas, although
company officials contend that
it was caused by a distant
earthquake.
Approximately 30,000 m³ (1
million cubic feet) of mud —
equivalent to the contents of a
dozen Olympic-size swimming
pools — are expelled per day.
It is expected that the flow will
continue for the next 30 years. Although the Sidoarjo mud
flow has been contained by
levees since November 2008,
resultant flooding regularly
disrupts local highways and
villages. Further breakouts of
mud are still possible.