Explosive 'Mud Volcano' Erupts

Unlike their magmatic counterparts, mud volcanoes erupt a slurry of fine sediments, water, and gases rather than molten rock. These formations occur when underground layers of fluidized clay and silt are pressurized by tectonic activity or the buildup of hydrocarbon gases, forcing the mixture to the surface. The temperature of the erupted mud is generally much lower than lava, sometimes even close to freezing. The primary gas released during these eruptions is methane, often accounting for over 86% of the emissions. This high concentration of flammable gas can lead to spectacular fireballs, as seen in a recent eruption on February 25, 2026, in San Juan de Uraba, Colombia, where a massive fireball was followed by billowing smoke. A similar event in Azerbaijan in 2021 saw flames tower 500 meters (1,640 feet) into the air. Globally, there are over 1,100 known mud volcanoes on land, with many more on the seafloor. Azerbaijan is a particular hotspot, home to nearly a third of the world's mud volcanoes. Other notable locations include Indonesia, Trinidad and Tobago, and Pakistan. While many mud volcanoes are small and ooze passively, violent eruptions can have significant consequences. The Sidoarjo mudflow, or "Lusi," which began in Indonesia in 2006, has displaced thousands of families and submerged villages and factories under a thick layer of mud. The eruption in Colombia, while not causing human casualties, killed livestock and damaged nearby infrastructure.