News

Kīlauea summit eruption episode 40 lava fountaining lasted for just under 10 hours on January 12, with maximum lava fountain heights of about 800 feet...

In July 2025, an area on the north rim of Yellowstone caldera began to uplift slightly. This area also experienced uplift during 1996–2004.

With 2026 having arrived, Caldera Chronicles looks back on the past year of geological stories in Yellowstone National Park

Kīlauea has been providing “fireworks” all year long on the Island of Hawaiʻi, and today we present a summary in commemoration of the New Year. 

Although the Yellowstone hotspot burned a swath of volcanic chaos across southern Idaho during the past 17 million years, it was an earlier period of...

Today marks one year since a unique episodic lava fountaining eruption began at Kīlauea’s summit on December 23, 2024—a style of activity not seen in...

Mountain building occurred all around the Yellowstone region and highlights a tortured geological history of uplift and volcanism.  The Gallatin Range...

Beneath Yellowstone's steaming geysers and fumaroles lies a chemical mystery: where did all the sulfur dioxide go?

GPS stations in Yellowstone can clearly show how the ground moves, but this simple measurement requires the data to go on a complex journey.

Tephra formed by lava fountains during the ongoing Kīlauea summit eruption has created a new puʻu (hill) southwest of Halemaʻumaʻu crater. The new...