Santanxia is located 78 kilometers northeast of Arxan City, in the Tianchi Scenic Area, and is the upper reaches of the Halaha River, echoing the Tianchi Mountain in the distance. The riverbed is composed of rocks, and the turbulent Halaha River flows through the valley. The three pools of water, Woniu Pond, Hushi Pond and Yuexin Pond, are as smooth as a mirror, and there are bridges across the river.