Sandao Valley is located within Yanuo Tropical Rain Forest Resort. It is around 3km in length. The cliffs on the two sides of the valley are steep and form a captivating sight. It has a unique geography. Some of the rocks in the valley are mysterious and uneven like the surface of the moon, while others are so smooth as if they were man-made. There are waterfalls, gigantic trees, ponds, springs, etc. It is definitely worth a visit!