According to the Yellowstone Volcano Observatory, it’s probable that this new hydrothermal feature is connected to activity ...

A new thermal vent spewing steam in the air at Yellowstone National Park is gaining attention, mainly because it’s visible ...

"In the late 1800s, early 1900s, if you were riding your horse you would've seen water erupting similar to this all along this terrace," Wilson said. "Hot springs, geysers, mudpots bubbling and ...

Geysers are formed when underground water meets superheated rock and blasts ... they chose travertine terraces near these at Mammoth Hot Springs, close to park headquarters in the northwest ...

In addition to the Grand Prismatic Spring, the Midway Geyser Basin features the Excelsior Geyser, a crater that dumps about 4,000 gallons of water a minute into the nearby Firehole River.

The Midway Geyser Basin's Grand Prismatic Spring ... bacteria that thrive on the rich minerals produced by the water around the hot spring. The center looks blue, but actually isn't – the ...