Geoscientists have discovered a magma cap at Yellowstone National Park that is likely playing a critical role in preventing a ...

Porkchop Geyser in Norris Geyser Basin experienced a blow-up of its own ... thermal features in the world.” The explosion is under investigation by Yellowstone geologists.

U.S. News Insider Tip: Some visitors, especially kids, might have respiratory discomfort at Norris Geyser Basin, as the sulfur smell can be strong. – Catherine Parker Old Faithful may be ...

Home to Yellowstone's Grand Prismatic Spring, the Midway Geyser Basin leaves visitors in awe of its rainbow-colored pools and powerful geyser. In addition to the Grand Prismatic Spring ...

Lightning strikes above the Fan and Mortar geysers in Yellowstone's Upper Geyser Basin. Geysers are formed when underground water meets superheated rock and blasts back out through a narrow hole.

Some springs, including Norris Geyser Basin, are also superheated. This means their underground water temperatures can rise to 400°F or over. They're heated by magma trapped under high pressure ...