A woman suffered severe burns on her leg after hiking off-trail in Yellowstone National Park and falling into scalding water in a thermal area near the Old Faithful geyser, park officials said.

Steamboat is the world’s tallest active geyser, but unlike Old Faithful, its eruptions are completely unpredictable. Now, a new analysis suggests that at least one recent Steamboat eruption got ...

This story appears in the December 2016 issue of National Geographic magazine. Become a member of National Geographic to explore more incredible images and stories from our archives. The star of ...

Geyser Hill is a group of thermal features, including geysers, springs, and pools next to Old Faithful Geyser in ...

West Thumb Geyser Basin (WTGB), along the southwest shore of West ... alkaline-chloride fluids throughout Yellowstone ...

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 ...

Bubbling hot springs, abundant grizzly bears and bison, and the famous Old Faithful geyser are just some of the reasons Yellowstone National Park attracts roughly five million visitors every year. Is ...

Steamboat is the world’s tallest active geyser, but unlike Old Faithful, its eruptions are completely unpredictable. Now, a ...

Old Faithful erupts more frequently than any of the other big geysers, although it is not the largest or most regular geyser in the park. Its average interval between eruptions is about 76 minutes ...

U.S. News Insider Tip: Escape the crowds directly in front of Old Faithful and enjoy the geyser's eruption from the second-floor outdoor balcony of the Old Faithful Inn, another national treasure.