A gigantic bulge in the north rim of the Yellowstone caldera is the latest sign of volcanic activity in the national park.

Learn more about the past eruptions at Yellowstone National Park and how each new eruption displaced evidence of the past.

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 ...

Scientists are monitoring a city of Chicago-sized swath of rising ground at the northern volcanic rim of the Yellowstone ...

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 ...

Episode 41 of lava fountaining to more than 1,600 feet high as part of the ongoing episodic summit eruption of Kīlauea ...

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.

No two volcanic eruptions are exactly alike, but scientists think a series of explosive eruptions at Kīlauea volcano fit into a whole new category. By analyzing the dynamics of 12 back-to-back ...

Campi Flegrei represents one of the most closely monitored and complex volcanic systems in the world, where the interplay between magmatic processes and a dynamic hydrothermal system creates a unique ...

The La Garita Caldera eruption was one of the three most destructive volcanic events in Earth’s history. It released ten ...

Seeing a volcano with my own eyes is a total bucket list dream, but seeing a volcano that's experiencing active volcanic ...