Old Faithful
Photograph by Jon Brown
Old Faithful Geyser was discovered in 1870. Located in Yellowstone National Park, the geyser was named by Henry D. Washburn. He was part of the Washburn-Langford-Doane Expedition to Yellowstone. The geyser erupts every 35 to 120 minutes. It shoots approximately 3,700 gallons of boiling water to a height of up to 185 feet. Children can view a webcam of Old Faithful Geyser at: Old Faithful.