Yanxiang Cave, with an area of about 20,000 square meters, is a Cambrian ecological limestone karst cave group. It is the most well-protected cave group in Northwest China and even in China, with the richest landscape and the largest volume. The 150 million-year-old "silicified wood" of the cave has undergone tremendous changes in silence; there are holes in the cave, halls in the cave are connected with each other, like a labyrinth; stalagmites in the cave hang upside down, with thousands of gestures and customs, showing the beauty of geological grand view and fantastic beauty.