Pha Hua Sing and Doi Samoe Dao is situated at Km. 16, the Na Noi – Pang Hai route. It is a viewpoint spot on the summit of the high cliff from which the 360o of scenery can be admired. At the spot, a wide terrace suitable for relaxation, star observation and sunset viewing, is located. Visitors who would like to go to Pha Sing will have to contact an official from the National Park The total distance is 2 kilomatres. Along the way, the Chan Pha Tree-Dracaena loureiri Gagnep, the unique tree will be seen. Moreover, when the sky is clear, Na Noi and Wieng Sa districts, as well as, the Nan river can be viewed from the cliff.