Uttaradit is one in the province of northern Thailand. Three natural parks are located in the province—Klong Tron, Lam Nam Nan, and Phu Soi Dao.
Phu Soi Dao ,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.