Incredible mud volcano beneath Mount Etna

A remarkable video of a mud volcano bubbling beneath Mount Etna on Saturday.

According to the filmer, this mud volcano in Paterno, Sicily is closely related to the volcanic activity of nearby Mount Etna.

According to the filmer, when the mud volcano starts to bubble, it means Etna will erupt in a few months.

Mud volcanoes are not true igneous volcanoes as they produce no lava.

The mud produced by mud volcanoes is formed as hot water, which has been heated deep below the earth's surface, begins to mix and blend with underground mineral deposits.