穿洞呈锤状，顶部大，中间及下部呈长窄形，洞高约30m，顶部宽约10m，中间及下部宽约2m，穿洞深约5m。雨后天晴云雾穿洞而过，故称飞云洞。 The Cave is hammer-like in shape as a whole, the top is bigger, the middle and the lower are long and narrow. The Cave is about 30 m tall and 5 m deep. The top part is about 10 m wide, the middle and the lower part are about 2 m wide. When it is clear after the rain, cloud goes through the Cave. So it is called Flying Cloud Cave.