Scientists have documented that Yellowstone’s rare acidic Echinus geyser has resumed erupting after more than five years of inactivity. The return of one of the park’s few acid-driven geysers ...

What does a nondescript hot spring in Yellowstone’s Lower Geyser Basin have to do with Indiana Jones? Caldera Chronicles knows. Throw us the idol and we’ll throw you the story!

“That’s Yellowstone being Yellowstone!” the U.S. Geological Survey wrote in an update, a plainspoken line that fits a place ...

But hiding along a stretch of Interstate 90 in Central Washington is a geological marvel that rivals anything you’d find on ...

A tourist died late last week after entering a closed, hazardous area of Hawaii Volcanoes National Park in what some say is ...

Echinus Geyser, the world’s largest acidic geyser, suddenly burst back to life in Yellowstone last month after being dormant for five years. Once called ...

Yellowstone’s Echinus Geyser awakens after years of dormancy, offering rare eruptions and unforgettable experiences for ...

A long-dormant Yellowstone geyser – the largest acidic geyser in the world – recently started erupting again. (MA Bellingham ...

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 and Nicole Thomas, ...

YELLOWSTONE NATIONAL PARK — As my little family stood in the cold recently waiting for Old Faithful to erupt, during our first visit to Yellowstone, a small crowd gathered, filling most of the benches ...

That’s the word U.S. Geological Survey volcanic experts used to describe a muddy eruption at Black Diamond Pool in Yellowstone National Park on Saturday morning. Video shared by the USGS on social ...