Pha Wai Waterfall is a stunning limestone waterfall located along the Huai Wai stream, featuring over 100 tiers with flowing water throughout the year. The area surrounding the waterfall is a pristine forest filled with a diverse range of trees, from medium to large sizes, alongside numerous rattan plants. This picturesque waterfall is situated in Village 3, Kiri Rat Subdistrict, Phop Phra District, Tak Province. To reach it, travelers can take Highway 1090, specifically at kilometer 40, and continue for 17 kilometers towards Pha Wai Village, followed by an additional 3-kilometer trek to the waterfall itself.