I have just been to the National Day of 2017. With my personal experience, I would like to make two useful suggestions to you. 1. Self-driving tourists had better drive directly to Dongmen, because Dongmen is near National Highway 316 and has parking lots. From Dongmen, they can go directly to the dam, and the trestle road starts from the dam. If you enter from the West Gate, you have to walk for about 20 minutes. On both sides of the road are man-made three-nation story sculptures. Personally, I don't think it's meaningful. By the time you get to the beginning of the trestle on the other side of the dam, people are tired, and the trestle needs to go up the hill. 2. Be sure to go to the lower trestle Road on the right side of the dam. If visitors enter from the East gate, they can reach the lower trestle road more conveniently. There are three real stone gates here. The stone gates of the Han Dynasty have sunk underwater. These three stone gates were built by the Hanzhong-Xi'an Highway during the Republic of China. They are also cultural relics. They are precious and worth seeing. I think these three stone gates are the essence of the whole scenic spot. And there are also stack holes in the Han Dynasty, which are also exquisite and difficult to solve. It's a pity to miss them.