This is a very simple trace just south of the town in Wulai. The starting point is behind the blue pieces of sheet metal along the road, and there is a path behind them that leads to the the stream. It would be best for you to start here instead of by the elementary school because it is very easy to miss the exit. Depending on the water level, this trace can be categorized as easy to medium. Along the trace there are numerous pools to swim in.