Located in Loei, one of the coolest provinces of Thailand. It is rugged mountain range and also the headwater of many rivers of Loei. Phu Ruea is the highest peak of 1,365m above sea level. At the top, it is viewpoint that you can panoramically see Hueang and Khong Rivers. More than half of the top of Phu Ruea is covered with low shrubbery, grasslands and strangely formed rock formations. Due to the cool climate the area is rich in orchid species which flower throughout the year.