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

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 ...

A New Hampshire woman visiting Yellowstone National Park was taken to a hospital after she slipped below the surface of the land in a thermal area near Old Faithful A woman who visited Yellowstone ...

So, after seeing Old Faithful erupt, be sure to hike around to discover the more than 150 hydrothermal features throughout this area. It's important to know that Upper Geyser Basin is pretty big ...

Yellowstone National Park is best known for its Old Faithful geyser and its stunning ... of thousands of years since a major volcanic eruption. The last one was about 174,000 years ago, and ...

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.