The geyser Old Faithful was named on this day in history, Sept. 18, 1870, after an explorer noticed the eruptions were quite "faithful." It remains a popular tourist attraction.

Old Faithful, a popular draw at Yellowstone, erupts every 90 minutes or so, shooting boiling water 100 feet or more toward the sky. The water tumbles through the cold-by-comparison air, plunges ...

Old Faithful Geyser is one of the most famous at Yellowstone National Park in Wyoming, and this footage captures it erupting in the most serene setting. It has erupted more than 1,000,000 times ...