Mae Chaem District split off to form the new district, Galyani Vadhana. Neighboring districts are (from the north clockwise) Galyani Vadhana, Samoeng, Mae Wang, Chom Thong and Hot of Chiang Mai Province, and Mae Sariang, Mae La Noi, Khun Yuam, Mueang Mae Hong Son and Pai of Mae Hong Son Province. Thailand's highest mountain, high Doi Inthanon, in the Thanon Thong Chai Range, is in Mae Chaem District. The district is divided into seven sub-districts ("tambon"), which are further subdivided into 85 villages ("muban"). Mae Chaem also has sub-district municipality ("thesaban tambon") status and covers parts of "tambon" Chang Khoeng. There are a
Highest unclimbed mountain had only one summit attempt back in 1957 when climbers came within of the summit; Nepal then banned future attempts. The mountain most widely claimed to be the highest unclimbed mountain in the world in terms of elevation is Gangkhar Puensum (). It is in Bhutan, on or near the border with China. In Bhutan, the climbing of mountains higher than has been prohibited since 1994. The rationale for this prohibition is based on local customs that consider this and similar peaks to be the sacred homes of protective deities and spirits, and the lack of high-altitude rescue resources from