This stunning astronaut photo shows the natural beauty of Japan's Aso Caldera — a giant crater-like bowl containing 17 different volcanoes, leftover from major eruptions spanning over 200,000 years.

Yellowstone is moving, but there's another supervolcano that is also showing signs that it's active in the U.S. It's cooling ...

United States Geological Survey (USGS) scientist Mark Stelton (left) and Kenneth Sims, a UW professor of geology and geophysics and a member of the USGS Yellowstone Volcano Observatory, examine a ...

Volcanic activity bubbling away beneath the Yellowstone National Park in the US appears to be on the move. New research shows that the reservoirs of magma that fuel the supervolcano's wild outbursts ...

Caldera volcanic eruptions create geological hazards that affect many communities around the world. Geophysical, geochemical and remote sensing data have become essential for understanding the tectono ...

Yellowstone Caldera Chronicles is a weekly column written by scientists and collaborators of the Yellowstone Volcano Observatory. This week's contribution is from Mark Stelten, research geologist with ...

Two long-dormant “supervolcanoes” on two separate continents appear to be stirring to life. Well, maybe. In recent months, more than a thousand minor earthquakes have rattled the area around the Campi ...

A new AI tool reveals that Campi Flegrei experienced more than 54,000 earthquakes between 2022 and 2025. By mapping these ...