Old Faithful Geyser
When thinking of Yellowstone, Old Faithful Geyser immediately comes to mind. It was the first geyser to be named (1870) in America's first National Park established in 1871. Old Faithful erupts about every 91 minutes to an average height of 145 feet and shoots anywhere from 3,700 to 8,400 gallons of boiling water. In the early 1880s it was actually used as a laundry. One observer "found that linen and cotton fabrics were uninjured by the action of the water, but woolen clothes were torn to shreds." The first photo is the very first one ever taken of Old Faithful and was done by William Henry Jackson during the Hayden Expedition in 1870. The second is from the 1920s, and the third is by Ansul Adams in 1940.