 The park is in northwest Surat Thani Province, covering area of the districts Tha Chana, Chaiya, Tha Chang, and Vibhavadi.The area encompasses two mountain chains, with the highest elevation being Khao Sung at 849 meters.The northern part drains via the Khlong Sa toward the Lang Suan River, while the south drains via the Khlong Yan to the Phum Duang River.