Introduction to the upper layer: The upper cave is a fossil cave (dry cave), spread out in a long and narrow S-shaped corridor from west to east. The cave is 1,000 meters long, 10-50 meters wide, and 1.5-20 meters high. The bottom area of ​​the cave is 20,350 square meters. The cave is divided into eight major scenic spots, with about 59 scenic spots. The landscape is mainly complex, with stalactites in different shapes and lifelike.