Doi Ian quite a distance over the plains near Thoeng town. 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
Inthawichayanon a grandson of "Prince Khamfan", the 3rd ruler of Chiangmai. He was concerned about the preservation of the mountain forests in the Thai highlands. Before he died he ordered that his remains be kept at Doi Luang, the highest mountain of the Thanon Thong Chai Range, which was renamed Doi Inthanon after his death. In 1883, a rumour that Queen Victoria of Great Britain intended to adopt his daughter, Dara Rasmi, spread from Burma to Chiangmai and Bangkok, alarmed Siamese government of British desire in Lanna. The Siamese King sent his brother, Prince Prince Bijitprijakara, to Chiangmai to forward the