Doi Ian Doi Ian Doi Ian () is a mountain in Thailand, part of the Phi Pan Nam Range, at the southeastern end of Chiang Rai Province limit near the point where the limit of this province meets with the northern end of Phayao Province, nine km from the border with Laos. This mountain rises in Ngao Subdistrict, Thoeng District. Its summit is 12 km east of Thoeng, near Ngao east of the road going from it to Wiang Kaen town. With a height of 1,174 metres Doi Ian is a conspicuous mountain in the surrounding landscape that can be seen from
Doi Tung to the princess mother's interest and encouragement, the hills were reforested. She was also instrumental in fighting against the opium trade. As a result the local hill tribes stopped growing poppies and began to grow other crops. The royal villa was originally built as a summer residence for the princess mother and now houses a museum and displaying her work to improve the life quality of local tribal people. The Mae Fah Luang Gardens are a botanical park on the slopes below the royal villa. Flowers and plants grow among rock formations. Doi Tung Doi Tung (ดอยตุง) is a mountain