Norris Geyser Basin, the hottest and most unstable series of geysers in Yellowstone Park, is also home to Steamboat Geyser, the world's largest geyser. When entering the scenic spot from Norris Spring parking lot, we first pass through a small museum, mainly introducing the situation of the scenic spot, the geological causes of various landforms in Huangshi area and the American National Park System. The geysers in this area are also quite rich in color, with soft blue-white like milk, and clear blue-green at the bottom. Many orange or green rivers formed by fungi are also very beautiful. Because of its instability, new fountains are produced every year, and old fountains die.