The bulge first appeared in 1996 and has now returned, but Yellowstone Volcano Observatory says there's no cause for alarm.

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

Inside the McDermitt Caldera, a 16‑million‑year‑old volcanic crater straddling the Oregon–Nevada border, geologists have ...

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

Filipina geologist Jenny Anne Barretto's social media post correcting fake claims about the Apolaki Caldera. Following a series of earthquakes in the Philippines one week ago, an AI-generated image of ...

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.

BEND, Oregon — There's no better way to celebrate summer than packing up and moving out for a camping trip at the Newberry National Volcanic Monument near Bend, a historic hotbed of volcanic eruptions ...

The region's unique geology makes it a must-visit for anyone interested in Iceland's volcanic activity. Askja is a remote caldera in the central highlands of Iceland. Famous for its dramatic scenery, ...