Located in Huay Phai subdistrict, within the area of Phataem National Park, there is a sandy stone terrace that has been eroded into deep grooves and pools of water, known as "Pha Sok" (where "Sok" refers to a long groove formed by water erosion). This spot offers breathtaking views of the Mekong River and the intricate mountains stretching into the distance. A significant highlight is the natural pool situated along the edge of the cliff at Pha Sok, which serves as a natural basin where visitors can relax and soak while taking in the stunning scenery. The ideal time to visit is during the rainy season.