Shuanglong Cave is about 520 meters above sea level and consists of an inner hole, an outer hole and an ear hole. The entrance is Xuan Lang, and the stalactites hanging on both sides are green and yellow, which look like two faucets. The two faucets are in the outer hole, but the dragon body is hidden in the inner hole, hence the name "Shuanglong Cave". According to legend, in ancient Wuzhou, the people were in dire straits for years. When Qinglong and Huanglong learned about it, they stole Tianchi water and saved the people. However, because of the violation of dogma, the Queen Mother pinned their necks with huge stones and trapped them in the inner cave of Shuanglong. However, Ssangyong still stubbornly looked up and spit water, and the clear spring water has been flowing ever since.
The outer cave is spacious, with an area of about1200m2, which can accommodate thousands of people. The temperature of the cave is kept around 17℃ throughout the year, which is warm in winter and cool in summer. Especially in the hot summer, it has become an eternal custom for Jinhua people and tourists to enjoy the cool in the cave. Compared with natural air conditioning, it is even worse. The ancients described it well: "Going up the mountain is like rain, and entering the cave is cold."
There are many cliff stone carvings on the outer wall of the cave. The word "Shuanglong Cave" on the north wall of the cave was handed down in the Tang Dynasty by handwriting, and was later copied by the Vice Minister of Communications of the Republic of China. The word "cave" on the south wall is Mo Bao of Wu Lin, a calligrapher in the Song Dynasty. The five characters of "36 holes" were written by Mr. Yu Youren, a veteran of the Kuomintang and a modern calligrapher. There are also "water and stone wonders" stone carvings and inscriptions on the travel notes of celebrities exploring caves in the Qing Dynasty on the innermost stone wall; Modern Hefei tourists' three-character stone carvings of "Shuanglong Cave" are very interesting. He carved the word "dragon" backwards, which means that the two dragon heads in Shuanglong Cave can only see their true colors when they stand in the cave hall and look back (see figure 1).
There is a yellow "stone waterfall" hanging in the north of Waidong Hall, which looks like an ancient robe. This is the legendary "Mr. Lu's hiding place". According to legend, Lv Dongbin, one of the Eight Immortals, once hid here. There is also a legend that a village girl swore not to marry or rob her rich man and was locked in a cave. Lv Dongbin went from the cave to rescue the village girl in the cave. Near the northern end of the hall, there are many landscapes such as "Camel Looking Up", "Shi Wa Peeping into the Cave", "Lion Treading" and "Xiao Jin Spreading its Wings", especially the karst landscape "Fairyland" in the cave, which makes people feel like they are in the outside world.
There is a huge screen stone between the inner and outer holes, and only a narrow underground river connects them. This river is15m long and 3m wide. If you want to enter the inner hole, you have to hold your breath and lie on your back on the boat, brush the rocks against the current, and don't lift your head slightly, otherwise you will be in danger of breaking your nose, which is very thrilling. This kind of sightseeing is unique in the world (see Figure 2). The ancient poem "There is a spring in the cave, and you want to find the source of the spring and lie on the boat" describes how to explore the cave in history. 400 years ago, Xu Xiake, a geographer and traveler in the Ming Dynasty, borrowed a bathtub from Mrs. Pan in front of the cave, stripped off his clothes and swam into the inner cave of Shuanglong.
"The water on the beam in thousands of feet is depressed, and the canoe lies on its back and people return to the stream." Entering the inner cave is like being in the Dragon Palace in a fairyland. The inner hole is larger than the outer hole, covering an area of about 3500 square meters. There are many stalactites, stalagmites, stone curtains, stone pillars, stone clocks and underground springs in the cave. "The dragon sees the head but doesn't see the tail." In the cave, you can see the bodies, claws and tails of two dragons. Other major landscapes include Rain Stone on a Sunny Day, Immortal Hanging Clothes, Snow Mountain Luohantang, General's Leg, Jinhua Ham, Beijing Roast Duck, Immortal Bed, Clouds Chasing the Moon, Fantasy Sky, Tortoise Exploring the Sea, Tortoise Fighting the Elixir, etc.
According to its unique landscape characteristics and value, Xu Xiake in Ming Dynasty listed Shuanglong Cave as the first of the "Eight Great Caves in Jin Huashan", and its landscape characteristics and value are "two doors away, hanging in the middle, strange land and water, secluded and bright".