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 ...

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

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 ...

A routine temperature check at the Norris Geyser Basin in Yellowstone National Park led geologists to discover a new blue ...

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

A 13-foot-wide hot pool formed over the winter in one of Yellowstone’s most active areas, and it could offer new insights ...

Yellowstone National Park announced Monday the discovery of a new 13-foot baby blue hot spring. It emerged with little ...

Last April, geologists conducting routine maintenance at temperature logging stations in Yellowstone National Park’s Norris ...

Learn about the new hydrothermal feature that appeared last winter in Yellowstone National Park, possibly on Christmas Day.

In Yellowstone National Park, a hydrothermal explosion has formed a new hole, filled with chalk blue water that’s hotter than a warm bath. A team of USGS geologists discovered the new pool in April ...

A supervolcano is located at Yellowstone National Park. Here's what happens to North America and the rest of the world if ...

"The discovery emphasizes the dynamic nature of Yellowstone's thermal activity," Yellowstone Volcano Observatory's Mike ...