The main attractions in Yellowstone Park are arranged in the shape of "8" with hot springs, geysers, rivers, lakes, waterfalls, canyons and various wildlife. Tickets - "1, ordinary tickets - "25 dollars for non-commercial vehicles, 20 dollars for snowmobiles, 20 dollars for motorcycles, 12 dollars for cycling and walking over the age of 16. Tickets are available for 7 days and can enter Yellowstone and Grand Teton National Parks. 2. Annual tickets - "50 dollars a year, you can go to Yellowstone and Grand Teton National Park, more suitable for residents of several nearby states. 3. National Park Annual Ticket - "80 dollars a year, you can go to all national parks and national memorials under the U.S. National Park System. The annual ticket can have two cardholders, each time entering the park, one car is restricted. There are up to four people on the bus. Many people have to pay the corresponding fees. Old Faithful Fountain is the most famous landscape in Yellowstone Park in the United States. It does not erupt as irregularly as other fountains, but every dozen minutes, never disappointing passengers. Its constant loyalty is loved by the world, and hence its name "Old Faithfulness". The old faithful fountain erupts every 90 minutes, lasting about 4 minutes each time. The highest and most beautiful eruption time is the first 20 seconds. Each time, about 10,000 gallons of hot water are ejected, the height is 40-50 meters, and the water temperature is 93 degrees Celsius. When people come to Yellowstone Park, they will have a quick look at the Old Faithful Fountain. But see it does not spray, a spray is like ten thousand horses galloping, but also in the sunshine, water vapor flashes colorful, spectacular, who can not exclaim. The Great Prism Spring, located in the western section of Yellowstone National Park, is the largest hot spring in the United States and the third largest in the world. It was discovered by geologists in 1871 and named Great Prism for its striking color. The water temperature of hot springs is as high as 86 C. Biophysical and chemical effects make the water color varied. Various colors diffuse from the center to the outside, and gradually form texture along the pool. The pond is 115 meters in diameter. If you want to feel the splendor of the hot spring as a whole, you can go to the hills southwest of the hot spring by Fairy Fall Trail. The best time for viewing the Great Prism Spring is from June to September every year, and try to avoid the cloudy weather. Mammoth hot springs, located in the northwest of Yellowstone Park, are the largest carbonate sedimentary hot springs in the world. The landscape is dominated by limestone steps, also known as thermal steps, which can be divided into Upper Terraces and Lower Terraces. The terrace is similar to Huanglong in Sichuan. The difference is that Huanglong is a cold spring and Mammoth is a hot spring. Mammoth hot springs originally had several hot springs running down from the hillside one by one, breeding a large number of bacteria and becoming a colorful ladder. However, after a crustal movement in 2002, most of the hot springs stopped activities, resulting in a large number of microbial deaths, which caused the Mammoth Hot Springs to lose color, and the dead bacteria also turned into gray powder and remained in the dry terrace. On the order.