The Dawna Range (Burmese: ဒေါနတောင်တန်း; MLCTS: Dau:na. Taung:tan:; Thai: ทิวเขาถนนธงชัยตะวันตก, ทิวเขาดอยมอนกุจู), also known as Dawna Hills, is a mountain range in eastern Burma and northwestern Thailand. Its northern end is located in Kayah State where it meets the Daen Lao Range, a subrange of the Shan Hills. The range runs southwards along Kayin State as a natural border with Mon State in the west forming parallel ranges to the northern end of the Tenasserim Hills further south and southeast. The Dawna Range extends east of the Salween southwards from the Shan Hills for about 350 km, at the western limit of the Thai highlands. Its southern end reaches the Thai-Myanmar border in the Umphang area, entering Thailand west of Kamphaeng Phet. The Thungyai Naresuan Wildlife Sanctuary is in t