These mud bubbles are located several miles from Mount Etna in Italy But scientists think they might hold the key to predicting what Europe's tallest active volcano might do next. The Salinelle mud ...

(CNN) — Stretching to the horizon, the gray-white earth rises in peaks like a well-whipped meringue petrified into mud and rock. A keen wind whips these otherworldly hills, while the land underfoot is ...

This article was originally featured on The Conversation. Rice farmers living in Sidoarjo Regency, Indonesia, awoke to a strange sight on May 29, 2006. The ground had ruptured overnight and was ...

At the confluence of White Canyon and the Colorado River, bubbling gas billows from a cone made of mud. This “mud volcano” was discovered by staff from the Glen Canyon Institute and the Returning ...

Can a bubbling pool of mud really predict a volcanic eruption? That's the commonly held belief around the town of Paternò, Sicily, where residents think heightened activity at a gurgling pool of mud ...

(THE CONVERSATION) – Rice farmers living in Sidoarjo Regency, Indonesia, awoke to a strange sight on May 29, 2006. The ground had ruptured overnight and was spewing out steam. In the following weeks, ...

A small mud volcano bubbles quietly among sandy hills in Gobustan, Azerbaijan. The cracked ground and pale landscape create a ...

For 3 months a sea of hot mud has been gushing from the ground in Sidoarjo, East Java, 35 kilometres south of Indonesia's second largest city, Surabaya. The steaming mud pool is growing at an ...

Mud volcanoes are usually found in subduction zones — the parts of the globe where tectonic plates collide, sometimes causing earthquakes, tsunamis and violent eruptions. Pockets of subterranean gas ...

Editor’s Note: Editor’s Note — CNN Travel’s series often carry sponsorship originating from the countries and regions we profile. However, CNN retains full editorial control over all of its reports.