Doi Inthanon stretching southwards from the Daen Lao Range. This range, the southwesternmost of the Shan Highland system, separates the Salween watershed from the Mekong watershed. Other high peaks of the Loi Lar Mountain Range are Doi Luang Chiang Dao (2,175 m), Doi Pui (1,685 m), and Doi Suthep (1,601 m). In 1954, the forests around Doi Inthanon were conserved, creating Doi Inthanon National Park, as one of the original 14 national parks of Thailand. This park now covers 482.4 km² and spreads from the lowlands at 800 m elevation up to the peak at 2,565 m. Given the varied climatic and
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.