Formerly known as Dong Larn and Phu Poiy Forest Reserves in Khorn Kaen and Loei Provinces, near Phu Kradung National Park. Phu Pha Mann possesses 203,750 rais (32,600 ha) of forests. Within the Park's woodland, mostly hill evergreen and mixed deciduous forest types, is the headwater of the Nam Pong River, where several scenic spots are located and surrounded by hill evergreen and mixed deciduous forests that made unusual nature places for example Tard Fah Fall, the very steep Pha Nok Kow Cliff and the heavily-visited Pha Phuang Cave. Moreover, therer is Pre-History Painting and also named cave's park dues to it has much of cave such as Kang Kao, Sra Kaew and Lai Tang caves.

Most of this area is a limestone, and very steep. It is 200-800 meters high above the sea level. There are many creeks flowing to Pong River from Phu Kadeung National Park, and from Chern River in Khon Kaen. The soil in this area comprises of rich abd sandy soil as well as stones.

Lai Thang Cave

where ancient paintings can be found inside. About 70 paintings are red which look like man and animals in many features.

Pa Ya Nakarach Cave

is the most beautiful cave of Phu Pha Marn National Park. There are many rooms inside the cave, glitter stalagmite and stalactite can be found in each room.

Pha Puong Cave

used to be called as "Tham Roy Puong". Inside the cave occur the beautiful stalagmite and stalactite. One can go outside to the peak, the wonderful view point.

Phu Ta Lor Cave

inside the cave is large tunnel, where 1000 people can get in the ground is level beautiful stalagmite and stalactite.

Plan Thong Waterfall

It is a small waterfall and high about 100 meters. It is far from the park about 1 kilometer. It is formed by many ground waters, and there are many levels respectively.

Tad Fha Waterfall

is a small waterfall, located a kilometer from the Park headquarters.

Tat Hong Waterfall

is a large waterfall, 60 - 70 meters hight, located between Phu Pha Man National Park and Phu Kradueng National Park.

Tad Yai Waterfall

It is a big waterfall, comprises of many small waterfalls before flowing to Chern River. It is high 80 meters as well as very beautiful particularly in the rainy season, and can drive there.