Mud volcanoes form when a combination of mud, fluids, and gases erupt at the Earth’s surface.

The underwater volcano Borealis Mud Volcano is located in the Barents Sea and was first discovered by researchers at UiT The Arctic University of Norway in 2023. The discovery received a lot of ...

A U.S. national park with geothermal marvels, volcanic peaks, and boiling mud pots—minus the crowds of Iceland.

Mud volcanoes are little known in North America, but much more common in other parts of the world, including Indonesia.

A island formed by the Kumani Bank mud volcano in the Caspian Sea stretched nearly 400 meters across in early 2023. Within a year, it was one-quarter the size.

A mud volcano on the Indonesian island of Java is collapsing, swallowing up more than 30,000 homes so far. Scientists blame a gas company for causing the eruption of sludge two years ago ...

Scientists on the AKMA3 ocean expedition discovered an exceptional underwater feature consisting of a mud volcano in the middle of a large crater 80 miles south of Norway's Bear Island. The ...

The Borealis Mud Volcano is only the second found in Norwegian waters and releases a continuous stream of methane-rich, muddy liquid from deep below Earth's crust.

A depth sounder near Sitka last month caught what appeared to be a volcano: A perfectly formed cone about 100 feet tall, with a plume of gas trailing from the top.

Mud and gas accumulates when sea sediments are trapped in subduction zones, where one tectonic plate slides under another, and can erupt out of volcanic cones or simply from a crack in the ground.

A volcano erupting on the Reykjanes peninsula in Iceland has opened a 2.5-mile-long (4 kilometers) fissure that appears to have stabilized and is spewing a "curtain" of lava, experts say.