Yellowstone National Park has a new thermal vent spewing steam in the air that could be visible to tourists once visitors ...

A park scientist noticed it about two weeks after a hydrothermal explosion along a boardwalk during the park’s overactive ...

Not to worry, I’ve put together all the best things to do in Yellowstone ... park’s most volatile side. The Mud Volcano itself churns with thick, bubbling mud. Sour Lake has water that’s ...

"The great basin," he wrote, "has been formerly one vast crater of a now extinct volcano ... the park's forests are adapted to growing in nutrient-poor soils, like those in the Yellowstone ...

Still, geological changes in Yellowstone draw interest because the park overlies a volcano that was responsible for powerful eruptions in the distant past. The volcano has had no lava eruption for ...

In this photo released by the USGS, a plume of steam is seen rising from a newly discovered thermal feature near ... in Yellowstone draw interest because the park overlies a volcano that was ...