is located on Highway 212 with a turn between km. 128 -129. Phu Mu is a low hill topped with a large plateau in Amphoe Nikhom Soi. The park is 353 meters above sea level and covers an area of about 4 square kilometers. It was established as a park area in 1980. Phu Mu was once home of wild boars but now is a location from where a wide view of Mukdahan can be appreciated.