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Secondary Mud Volcanoes, Andaman Islands

Mud Volcano Picture Gallery

From Andrew Alden, About.com

Large mud volcano eruptions from the Sumatra quake made the ground subside, triggering small secondary eruptions weeks later in subsidence fractures.
Little ones spawned by a big one13 Jan 2005 photo courtesy Vineet Gahalaut, National Geophysical Research Institute (India)
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