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.

Dubbed "Old Faithful" in 1870 ... a new analysis digs into the question and maps out what lies beneath. While the feature has been thoroughly and regularly studied for decades, researchers ...

Using a network of seismometers, researchers are finally mapping out Old Faithful’s subsurface network. Using a network of seismometers, researchers are finally mapping out Old Faithful’s ...