This mountainous park is home to steep cliffs and a long section of the Nan River.

The park's area is 640,237 rai ~ 1,024 square kilometres (395 sq mi).

[2] The park's highest point is the Khao Khun Huai Huek peak at 1,234 metres (4,049 ft).

Tree species include Irvingia malayana, krabak, Malabar ironwood, makha, Xylia xylocarpa, Dalbergia oliveri and Vitex pinnata.

[3] Park animals, some of which are endangered species, include tiger, leopard, fishing cat, wild boar, mouse deer, masked palm civet, Asiatic wild dog (dhole) and treeshrew.