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.

Yellowstone's Upper Geyser Basin plays host to Old Faithful along with about 300 other active geysers, according to the National Park Service.

Midway Geyser Basin is located 7.5 miles north on the Grand Loop Road from the Old Faithful complex. And, just like any noteworthy feature in the park, the crowds can get pretty thick during the ...

There were two bison [standing] there. I thought it was a great photo opportunity,” said Louise Howard, who witnessed the ...