What triggers geysers to go off is still not well understood. A new paper shows that one small earthquake likely triggered an ...

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.

A New Hampshire woman suffered 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.

All are worth a visit. The country's first national park. It is known for the Old Faithful geyser. There are other geysers, ...

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 ...

which is located a stone’s throw from Old Faithful Geyser and is a tourist attraction in its own right. Inevitably, the 1970s pictures come out, on phone screens and in photo albums, and it’s apparent ...

Although not as famous as Old Faithful Geyser or Grand Prismatic Spring, the features of West Thumb Geyser Basin are some of the most varied and beautiful in Yellowstone National Park. From hot pools ...

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.