Mud Volcanoes - John Seach

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Mud volcanoes are not true volcanoes and do not erupt lava or ash. They occur when mud and sand under the surface are squeezed upward by compressive forces and expelled at the surface.

They are commonly found in areas rich in oil and natural gas such as the south of Trinidad, often appearing along zones of weakness in the Earth's crust.

Mud Volcanoes