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
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