Dramatic 'Mud Volcano' Eruption Investigated

Unlike igneous volcanoes, mud volcanoes do not produce lava and are not necessarily driven by magmatic activity. They erupt a slurry of mud, water, and gases—primarily methane, which makes up about 86% of the gaseous emissions. The temperature of the ejected mud is also far lower than lava, ranging from 2°C to 100°C (36°F to 212°F). These phenomena typically occur in regions with tectonic activity, where underground layers of silt and clay become pressurized. This pressure, often intensified by accumulating hydrocarbon gases, forces the muddy mixture upward through geological faults and fissures to the surface. The high concentration of methane gas poses a significant risk. Eruptions can become explosive, with the spontaneously combusting gas shooting flames hundreds of meters into the air. A recent eruption in Gobustan, Azerbaijan, in February 2026 produced a powerful outburst that lasted for 15 minutes. The resulting mudflows can be catastrophic. The Lusi mud eruption in Indonesia, which began in 2006, is the most destructive on record, burying some villages under 40 meters (130 feet) of mud and displacing nearly 60,000 people. While some eruptions are harmless, others have occurred directly within communities. In 1997, a mud volcano erupted in the village of Piparo, Trinidad, burying houses and crushing roofs. Fortunately, preceding rumbles and ground shaking alerted residents, allowing them to evacuate. Mud volcanoes vary drastically in size, from less than a meter high to massive formations up to 700 meters tall and 10 kilometers wide. An estimated 1,100 mud volcanoes have been identified on land, with scientists believing over 10,000 may exist on the ocean floor.