Lacated on Pung Huei Mountain range consist of Na Yang Gluk Conservation Forest and conservation preparing forest. Sai Thong National Park was designated on the 30th December 1992, with total area of 319 km2. The Park located in Amphur Nong Bua Rawae, Thep Satit, Pakdee Chumpon and Nong Bua Daeng, Chaiyaphum Province.
It is the head water of Lum Huai Prong Khun Pet, Lum Huai Chiang Ta, Lum Huai Yae, Lum Huai Yang, Lum Nam Jao-field of Shee River.
consist of dry evergreen forest, dipterocarp forest and mixed deciduous forest