 Namtok Sai Khao National Park covers an area of 110 km2 of forested hills of the Sankalakhiri mountain range at the border of Pattani, Yala, and Songkhla Provinces.Khok Pho is divided into 12 sub-districts ("tambons"), which are further subdivided into 81 administrative villages ("mubans").Missing numbers are "tambons" which now form Mae Lan District.