Interesting facts about Old Faithful

Old Faithful is a cone geyser located in Yellowstone National Park in Wyoming, United States. It was so named in 1870 by the Washburn-Langford-Doane Expedition because it seemed to spout “faithfully” every 63 to 70 minutes. Continuous observation revealed, however, that the eruptions occurred with some irregularity, the intervals varying from 33 to 120 minutes. … Read more