Map covers parts of Upper Perak District in Perak and Yala Province in Thailand showing international boundary, physical landscape, land use, footpaths, belukars (secondary jungles), jungles, rivers, streams, form (relief) lines which show the general shape of hill features, spot heights, trigonometrical stations, Sungei Belum or Sungei Perak, Sungei Singor, Sungei Tiang and others