Doi Luang, Phi Pan Nam Range Doi Luang, Phi Pan Nam Range Doi Luang () is a 1,694 m high mountain in Thailand, part of the Phi Pan Nam Range. The mountain rises at the western end of Ban Tun Subdistrict, Mueang Phayao District, Phayao Province, near the point where the limit of this province meets with Lampang Province. With a height of 1,694 metres it is the highest point of the Phi Pan Nam Range. There are a number of lesser mountains with the name "Doi Luang" throughout the same range. Its summit is in Doi Luang National Park, less than seven km to the
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