Introduction to Mystery Cave No. 3: Mystery Cave No. 3 is larger than Mystery Cave No. 2, about 1,200 square meters, but the height is very different. The top of the cave has a 45-degree slope extending from the south to the north wall, and the ground is almost It also extends to the north end with a 45-degree slope, giving people a deep and eerie feeling. There are three supporting pillars in this mysterious cave, arranged in a straight line from north to south.