The unsettling 13-foot gap is located at Norris Geyser Basin - one of the hottest, oldest and most dynamic of Yellowstone's ...

A new light blue hot spring has formed in Yellowstone’s Norris Geyser Basin after months of small hydrothermal explosions.

More geological changes are occurring at Yellowstone National Park, as another hole forms in one of the park's basins.The ...

The blue water spring is about 13 feet in diameter and 1 foot below the rim, USGS said. The water in the pool was measured at ...

The dominant rock type in the Yellowstone region is rhyolite, and that is very rich in silica. As hot water circulates underground, it can dissolve that silica and bring it to the surface, where it is ...

Thermal water in Yellowstone also contains an abundance of arsenic, mercury, and fluoride at levels that are unsafe for human consumption. These pools may also host microorganisms and pathogens such ...

As if Yellowstone National Park wasn't already a major tourist attraction, officials say that a new blue pool has been ...