Located in Nam Cham Subdistrict, follow the Phrae-Nan highway, Route 101, for about 12 kilometers, then turn right and continue for another 6 kilometers. Pha Muang Phi covers an area of approximately 500 rai and is shaped by natural erosion of sandy soil and rocks into various formations resembling mushrooms and cliffs, creating a unique and intriguing landscape. The name "Pha Muang Phi" is derived from the local language, where "Pha" means thicket and "Muang Phi" translates to quiet and eerie, possibly due to the mysterious and haunting character of the terrain. This area was designated as a wildlife sanctuary on March 2, 1981.