The flat part along the river basin in the middle of the important areas, namely, Phan District Mueang Chiang Rai Mae Chan District, MAE Sai District, Chiang Saen district. And the Chiang Khong district.With a height of about 410-580 meters above sea level.The most of the mountainous area, forest cover.The mountains have a height,, 1 500-2 000 meters above sea level.Chiang Rai province surrounding mountains, especially in the west mountainous a watershed for throughout the province.
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