Yellowstone is a dynamic geologic system—the one constant is change. This is demonstrated daily by hydrothermal activity ...

The study of geyser dynamics and hydrothermal systems in national parks offers crucial insights into the interplay between subsurface thermal energy, fluid mechanics and geological structure. In these ...

For years, public imagination has fixated on Yellowstone as the ultimate natural doomsday machine, a supervolcano waiting to ...

A surprise eruption that shot steam, water and dark-colored rock and dirt dozens of feet into the sky Tuesday sent people running for safety in Yellowstone National Park. The hydrothermal explosion ...

Geyser Hill is a group of thermal features, including geysers, springs, and pools next to Old Faithful Geyser in Yellowstone's Upper Geyser Basin. Geyser Hill is a must for any Yellowstone visitor. It ...

A brand new baby blue pool formed over the winter holidays in Yellowstone National Park, officials said. Mike Poland U.S. Geological Survey Get ready for a little Christmas in July: There’s a new baby ...

Lassen Volcanic National Park, about a four-hour drive north of San Francisco, feels like a secret getaway.

Scientists are monitoring a city of Chicago-sized swath of rising ground at the northern volcanic rim of the Yellowstone ...