Site description The IBA comprises Khao Soi Dao Wildlife Sanctuary in south-eastern Thailand. To the south, the site is contiguous with Khao Khitchakut National Park, while, to the west, it is contiguous with Khao Ang Ru Nai Wildlife Sanctuary (IBA TH034). Topographically, the site comprises two distinct areas: a mountainous area with perennial streams and waterfalls in the south; and a smaller, low-lying area in the north. The dominant vegetation types at the site are semi-evergreen forest, and hill evergreen forest at higher elevations. In addition, there are some areas of deciduous forest and bamboo.