Phu Lang Ka Forest Park located in Chaing Kham District and Pong District, Pa Yao Province, situated in Nam Puey National Reserved Forest, Nam Yuan Forest, Nam Lao Forest and Mae Yom National Reserved Forest, covered the area of 7,800 rais. The Royal Forest Department was delacred this forest park on May 8, 2002.

Topography
It is a high mountain of San Pan Nam Mountain Range laid from eastward to westward. It is about 900-1,720 metres above the average sea level. Its important river is Ka River that flows through the southern part, Nam Tom Stream and Mae Ru River which are flowing to the southwestern Ru River , Kha Naeng Stream and Pah Yang Stream that are flowing to northern Lao River. All flows to Yom River afterwards

Flora and Fauna
About 63% of the area is consisting of the Hill Evergreen Forest and the Evergreen Forest located on the river bank. Dominant flora species found consist of Fagaceae genus such as Castanopsis acuminates, Castanopsis tribuloides, Castonopsis diversifofia, Castanopisi indica and Castanopsis armata, including TALO, Styrax benzoides, PAYA SEU KRONG and Betula alnoides. About 21% of the clear forest consist of dominant flora species like TALO, Fagaceae genus, Engelhardtia spicata, Callicarpa arborea, Eriolaena candollei and Albizia chinensis. The grass land has been found 16% of the area. Its flora species recorded consist of Imperata cylindrical, Saccharum spontaneum, Gramineae sp., Saccharum arundinaceum, Ageratum conyzoides, and so on. In the past the slope closed to the peak used to be the opium field. Presently, it has been left to natural replacement and also establishing to be the A1 watershed area where is generating the water to the Mea Yom River.
Fauna found consist of barking deer, wild pig, serrow, bay bamboo rat, lesser mouse deer, treeshrew, squirrel, tiger, leopard, bear, civet, palm civet and several bird and reptile species.