There’s not a grizzly bear in Yellowstone National Park that is willing to mess with a bison herd on full alert. The accompanying footage, captured Monday via the park’s livestream camera, ...

Catherine Parker More than its star attraction (Old Faithful), the Upper Geyser Basin boasts not only the largest concentration of geysers in the park, but also in the entire world (Yellowstone is ...

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.

However, even if the new steam column isn't active when you visit, it's just one of more than 10,000 hydrothermal features ...

G eyser 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.

Catherine Parker This world-renowned geyser is a must-see for every Yellowstone ... Point trail for a bird's-eye view of the Upper Geyser Basin. Many recent visitors chose to gather around the ...

which is the Midway Geyser Basin, where we find Grand Prismatic, and the Upper Geyser basin, which is where we find places like Old Faithful. - It's about 300 feet in diameter. It has a discharge ...