Old Faithful Geyser
I think no one would miss the Old Faithful Geyser when you are visiting the Yellowstone National Park. This is a regularly-erupting geyser. Over the years, the length of the interval has increased. The disruptions of Old Faithful are more predictable. It is interesting to know that in the early days of the park, Old Faithful was often used as a laundry. This is one of the images of the eruptions captured during my visit last year.