Introduction to Santan Gorge: Santan Gorge is located in the upper reaches of the Halaha River and is about 3 kilometers long. Because there are three pools in the canyon, it is called Santan Gorge. Santan Gorge consists of Woniu Lake with smooth water, Hushi Lake with mirror-like waves, and Yuexin Lake with crystal clear bottom. There are dense coniferous and broad mixed forests on both sides of the river. The scenery is pleasant and intoxicating.