Nan'ao North River belongs to the branch of Nan'ao River. The source comes from Dayuan Mountain. The scope of river basin reaches 130，000 square kilometers. The length amounts to 31.6 kilometers. It meets Nan River at Bihou Village and enters the sea. Both sides of North River are high mountains. The valley is deep and steep. The river course is full rocks and looks like a natural miracle. Tracing the river feels like flying in the air as stepping on huge rocks. Listen to the river striking the bank， gaze at the flushing currents， look upward at the clouds and sunny sky， and appreciate the green mountains and spraying water drops. It will be a worthwhile trip. The landscape along North River features in the beautiful canyons. They look different at upstream， midstream， and downstream， but they are all beautiful scenes. Grass and trees grow along the river. Besides， there are smell-less hot spring， waterfall， strange rocks， and the precious herb anoectochilus formosanus. It is suitable for outdoor activities such as stone gathering and wandering. The sandbank camping area is available for camping and playing water. It is a cool refuge in summer.