Rainbow Waterfall on the Malaolou Trail (中文版: 彩虹瀑布) is a very tall waterfall on a nice hiking trail in Taitung, Chenggong Township (台東縣成功鎮). The main waterfall is not easy to get to, but the trail is nice, and ends at a smaller waterfall, which is good for swimming.
Taitung County, Chenggong Township
Waterfall: 23.13551, 121.34432
Parking: 23.13002, 121.34766
Detailed Map: https://goo.gl/JuQZag