Learn more about the new hydrothermal feature that appeared last summer in Yellowstone National Park, and how, even though it ...

The recent death of a bison at Grand Prismatic Spring is an emphatic example of the danger posed by thermal areas in ...

It happened on Saturday morning, June 21, at the park’s Grand Prismatic Spring, Michael Poland, geophysicist with the U.S.

The recent death of a bison at Grand Prismatic Spring is an emphatic example of the danger posed by thermal areas in ...

Over the weekend, a bison stumbled into the Grand Prismatic while several visitors could do nothing to save it.

Beneath Yellowstone National Park lies something extraordinary—a giant underground chamber filled with molten rock, trapped gases, and intense heat. For years, scientists have known about this ...

The caldera is the enormous volcanic crater left from the last time Yellowstone experienced a giant eruption, 640,000 years ago. It covers an area about 30 by 45 miles .

Is it safe to drink treated water from rivers in Yellowstone National Park? Well, that depends on whether there are any ...

One hundred years ago, on June 23, 1925, a mountainside in the Gros Ventre Range in northwest Wyoming collapsed, unleashing ...

We know the caldera has made three impressive eruptions in its history, 2.1 million years ago, 1.3 million years ago, and about 631,000 years ago, reshaping the area’s landscape. What everyone ...

The last caldera-forming eruption at Yellowstone "was much more complex than previously thought," according to the annual report about activity at the supervolcano. Skip to main content.

The Yellowstone Caldera, sometimes known as the Yellowstone supervolcano, is a volcanically active region in Yellowstone National Park. It measures 55 kilometers (34 mi) by 72 kilometers (44 mi).