Doi Luang, Phi Pan Nam Range north of Route 120 between Wang Nuea and the AH2 Highway. 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
Highest unclimbed mountain peaks from subpeaks, there is no widely agreed standard. In 1994, the International Climbing and Mountaineering Federation (UIAA) classified 82 mountain peaks in the Alps whose summits were at least above sea level and with at least of topographic prominence over any adjacent mountain pass or col, as a distinct peak. It can be difficult sometimes to determine whether or not a mountain peak has been fully summited. Long before modern mountaineering commenced in the middle of the 19th century, evidence indicates that people did indeed travel up to the summits or near to the summits of major mountain peaks.