Tam Lu Waterfall is located in the upper reaches of the Long Dai River (also known as the Dai Giang River), in Truong Son commune, Quang Ninh district, Quang Binh province. Located about 60-70km north of Dong Hoi city center, the waterfall is situated in the pristine Truong Son mountain range, featuring over 100 waterfalls of various sizes along the 100km-long Long Dai River. Tam Lu Waterfall is considered the most beautiful and majestic, standing about 20m high and 100m wide, divided into 3 tiers of cascading white water resembling three tilted jars (hence the name "Tam Lu").

The water is cool and crystal-clear, the rapids are powerful, and both riverbanks feature vertical cliffs and primeval forests. Popular activities include motorboat trips to navigate the rapids, waterfall bathing, riverside BBQs, and taking photos of the stunning natural scenery. This is an ideal destination for adventure travel, best visited in summer (May-August) when the weather is dry and the water is cool.


