SEATTLE - A lava formation inside Mount St. Helens' crater has a new, glowing protrusion the size of a 30-story building. The protrusion, which glows red at night, has risen by 100 meters (330 feet) ...

Since the Kobe Ocean Bottom Exploration Center (KOBEC) was established in 2015, the Center has carried out three survey voyages to the Kikai Caldera, south of Japan's main islands. Based on these ...

Lava domes form at the top of many volcanoes when viscous lava erupts. When they become unstable, they can collapse and cause a hazard. An international team of researchers has analysed summit dome ...

Yellowstone Caldera Chronicles is a weekly column written by scientists and collaborators of the Yellowstone Volcano Observatory. This week's contribution is from Dan Dzurisin, geologist with the U.S.