Yixiantian (one-line sky) Cave in Yongxing County of Chenzhou City has a length of 356 meters and a height of more than 50 meters.
When entering the narrowest gap of 0.2 meters, visitors can feel the perfect fusion of the cliff rock and the sky. Upon exiting the cave and climbing to the observation deck, visitors can immediately see a picturesque landscape and fully immerse themselves in the serenity of the natural oxygen bar.