The Sidoarjo Mud volcanoe is still erupting.
It has covered an area twice the size of the small European Country of Monacco, so far.

Thousands of people have fled, as more thousands of homes and businesses have been buried in the grey mud.

Unlike a 'normal' Lava volcanoe, which stops after it has released its pressure, and solidifies.
I dont think this will ever stop....as long as it gets its boiling water from the heat of the Earth, plus an earth mud mix.
It think it could spew out, for hundreds of years? Something like Yellowstones 'Old Faithful' Geyser?
Luckily its water travels underground through rocks, and not earth.

Heres a U-Tube Video, complete with sound, to watch.
When the video finishes, lots of extra static photos come up.

http://www.youtube.com/watch?v=2Ds6evQ8ohQ

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"You will never find a real Human being - Even in a mirror." ....Mike Kremer.