terrain consists of the high mountains complex As a part of the designated thanon Thongchai mountain range stretches along the North - South. Extending from the Himalayas in Nepal. The elevation of the area, between the 400-2565 metres from the mean sea level. By the peak at DOI Inthanon. Which is the highest point in the country. The high followed by DOI head Royal 2 330 meters high, Hill head high, low 1 900 M. DOI tiger head, high 1881 meters above sea level,