Sri Nan National Park, as the abundant forests. There are complex high mountains that lying in the North - South. It is an important part of forests and stream of Nan River and there is a prominent point of beautiful nature. Such as Sao Din Na Noi, Cok Sua, Pak Nai, Kaeng Luang, Pha Chu mountain, Samer Dow mountain and Pha Hua Sing.