Chiang mai's geography comprises mainly groves and mountains with a broad plain in the middle of the region on both sides of Ping River, one of the major tributaries of the Chao Phraya River originates in the Chiang Dao mountains. The highest mountain of Thailand, the 2575 metet high Dot Inthanon, is located in the district. Several national parks are in the district: Doi Inthanon, Sri Lanna