Introduction to the third hall: The third hall is a domed cave. The cave hall is large and can accommodate ten thousand people. It is the essence of the whole cave and the most spectacular. Under the light, it looks like a paradise in the mist. The feeling of going to the countryside for a month. On both sides of the hall, there are three thick and majestic Optimus pillars connected to the cave roof, more than 30 meters high. One of them is as high as 39.88 meters and has a circumference of 16.4 meters. It is the tallest stone pillar in the open cave in my country and the world's tallest. The second highest; next to the foot of the stone pillar, there are many small scenes, such as "peacock in full bloom", "blue dragon coiling pillars", "flat peach offering longevity", "golden wall and jade mushroom", "lobster coming out of the hole", "awakening lion roaring" and other scenes, which are dizzying for the eyes. There is an underground river in the cave, with gurgling water, clear and pure, warm in winter and cool in summer. It passes through the bottom of the cave and flows through the cliff in front of the cave. It turns into a waterfall and pours down like a thousand feet of white water, which is a wonder; the underground river It can walk 50 meters, sometimes wading, and then stepping on the ground, which is very interesting; there is another small cave on the right side of the underground river, with layers of "terraces" in the cave, covered by hazy light, and villages far and near are vaguely visible. Although the scenery is small, it is endlessly interesting. .