Salawin National Park is in Sob Mei and Mae Sa-riang, Mae Hong Son Province. Most of this area is in the high mountain, and lowland. The forest is very well reserved. It is in 721.52 sq.km.

It is summer between March-May, rainy in June-October, and winter in November-February

It is very well reserved and being the water source of Yuam, Salaween, Kong Ka, Mae Ngae, and Han Rivers. There are many kinds of plants such as teak, Xylia xylocarpa (redwood plants), and etc. There are antelopes, deer, barking deer, tigers, boars, bears, squirrel, chipmunks, gibbons, palm civets, and birds.