The old Faithful Fountain is known as the Yellowstone Park card, and it erupts regularly every 93 minutes. The wind and rain never disappoint the passengers, and its consistent loyalty is loved by the world. It is said that each eruption takes about 4 minutes, and the highest and most beautiful time is the first 20 seconds. Every time, the hot water is sprayed about 10,000 gallons, and the height is up to 40-50 meters. Our tour guide contacted the visitor center to know that the next eruption time is 1:09. We mentioned arriving and sat and waited. Visitors waiting for the old faithful geyser to erupt are sitting on the wooden observation deck, waiting. The faithful spring is really faithful, about 1:09, erupting on time. Every day the spray is not very high, and it is estimated that more than meters high should be there. Hurry up to take pictures and videos, it is rare to see.