Bainiaoyan is located under Mozhai Mountain, northwest of Lietun, Jiayu Township, Bama Yi Autonomous County, Guangxi. Because of the swallows in the cave, bats fly, also known as Bainiaodong. The cave is a unique underground river cave, which is a "masterpiece" of nature for hundreds of millions of years. The cause of Bai Bird Rock is mainly formed during the long process of continuous erosion, erosion and collapse of Mozhai Mountain by underground river water. To travel to Bama, Bai Bird Rock is one of the key tourist spots. Take a boat from the small pier, walk around the cave lake and return to the pier. Caves have high and low, near the bird nest, far looking up the patio, quite a fun.