Haew Sai Waterfall is a large waterfall with a height of about 20 meters. Under the waterfall there is a deep basin where you can swim, and under the waterfall there is a large rock outcrop as a shelter where you can camp to escape the rain. The atmosphere around the creek is pleasant for a walk. There are trees covered all the time. In the rainy season, the waterfall has a lot of water and is very beautiful. To visit the waterfall, the entrance to the waterfall is located at kilometer 67 on National Highway No. 12 (Don Lom Sak - Chum Phae) walking distance 1 km.