Yellowstone Caldera Chronicles is a weekly column written by scientists and collaborators of the Yellowstone Volcano Observatory.

Bison herd stops traffic as it crosses road in Yellowstone A bison died after it appeared to stumble into a hot spring at Yellowstone National Park last week while visitors looked on.

In Yellowstone National Park, at least 18 massive hydrothermal explosions have formed craters ranging from 300 to 2,500 meters across.

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

Onlookers at one of Yellowstone National Park's most popular sites watched a large bison take its final steps into a scalding hot spring and die in a horrifying reminder of what can happen away ...

After a thermal explosion at Biscuit Basin, the Yellowstone Volcano Observatory unveils a new safety plan to enhance monitoring and protect visitors in the park.

Visitors to one of Yellowstone National Park's most popular sites saw a bison take its final steps into a hot spring, where it died.

Yellowstone National Park has a new plan for dealing with geologic hazards like thermal explosions and earthquakes for the first time in 11 years ...