Phu Soi Dao (ภูสอยดาว) with an area of 125,110 Rai covering Nam Pad district of Uttaradit and Chat Trakan district of Phitsanulok, the park, particularly at the height 1428 metre in Ban Rom Klao, used to be the stronghold of the communist terrorists. Located in the mountainous area with over 1,800 meters height above sea level, the topography of the park is like that of Phu Kradung. It is cold throughout the year. Beside interesting natural attractions in the park, carrier and tent are available for tourists.