Tucked away in the Grobogan region of Central Java, Indonesia, there is a geological oddity that has been quietly bubbling away for centuries and is now suddenly grabbing the world's attention.

This video shows a mud volcano in Gobustan, Azerbaijan, where thick gray mud slowly rises and bubbles to the surface from ...

A mud volcano has roared to life in front of a temple in Taiwan, with mesmerizing videos capturing the moments mud shot out of the ground beneath a crown of fire. The Wandan mud volcano, located in ...