Phu Pha Teab National Park (Mukdaharn), in Muang District, Dontan District, Mukdaharn Province, consists of productive forest which has deciduous forest in rocky field or rocky mound covered with colorful flowers in winter, and mixed forest in the valley. There are naturally wonderful things such as strange-shape rock, historic cave, waterfall and spring all year round. And also many kinds of animal live there. The area is about 48.5 square kilometers or 30,312.5 Rai.

The area consists of many high mountains close to each other such as, Phu Nang Hong, Phu Thum Pra, Phu Hin Terb, Phu Mano and Phu Jongsi. Phu Jongsi, the highest peak about 420 meters above sea levels, is a rocky mountain consisting of erected and high cliff and different shapes of rock overlapping each other. The area, almost sandy soil, is the source of many streams such as Huai Taluak, Huai Sing and Huai Ruar.

The weather in National Park is three seasons.
Rains – from June to November
Winter – from December to January
Summer – from February to May

The forests in the area are naturally mixed forest and deciduous forest which has many kinds of plant such as Malabar ironwood, Burmese ebony, ironwood, Makhaa, rosewood, Krabog (a kind of Ixonantraceae), Krabark and Heang (a kind of Dipterocarpaceae), Indian oak, Tiew (a kind of Guttiferae), wild champaka, Moulmein cedar, Siamese sal and ingyin. And animals found are small-size animal such as wild boar, deer, jungle fowl, fox, monkey, hare, green peafowl, pheasant and many kinds of bird.