|Habitat: Evergreen, dry dipterocarp and mixed deciduous forest. The eastern portion of the NPA is flat to gently rolling terrain under 400 m north and south of the Bang Nouan river. The flats are bounded by low hills to the north and the south. In the central portion the river breaks through a large block of steep hills. East from the hills the river flows in a wide valley rising north, south, and east to hills the crest of which demarcates the edge of the Bang Nouan catchment. Elevation is from 200 -1,000 m.