Doi Chiang Dao Doi Chiang Dao Doi Chiang Dao (, ), also known as Doi Luang Chiang Dao (, ), is a 2,175 m high mountain in Chiang Dao District of Chiang Mai Province, Thailand. It is one of the highest peaks of the Daen Lao Range on the Thai side of the border. Doi Chiang Dao is part of a limestone massif located six km west-northwest of Chiang Dao town and less than 40 km south of the border with Myanmar at the eastern end of the Thai highlands. This mountain is part of Chiang Dao Wildlife Sanctuary, south of Pha Daeng
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