Doi Tung Doi Tung Doi Tung (ดอยตุง) is a mountain in the Thai highlands of Chiang Rai Province, Thailand. While not the highest elevation of the province, the 1,389 m high Doi Tung rises steeply close to the Thailand-Myanmar border. It is the highest point of the Doi Nang Non, a subrange of the Daen Lao Range, in the area known as "Golden Triangle". Most of the bedrock of the mountain is limestone and granite. The vegetation below 1,000 m is mostly deciduous forest, and the vegetation above this height is evergreen. The population of Doi Tung is about 11,000 people, consisting
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