Northern mountainous area is complex. Also included as a watershed covered by forest. Primarily northeastern areas of plains .The region became a fertile river plains region. Of the valley and the mountains.
The North is mountainous high complex, including a forest is covered with water. Most of the Northeast is a region of plateau .Klangklai sector as the Plains River has an abundance of. South Valley and mountain
Northern area is a mountain, and is covered with forests, water, etc. , in the northeastern region of plateau is mainly the central region has become a river plain in the south there are a lot of fertile valley and ranges