Thanon Thong Chai Range of Southeast Asia. Other high peaks of the Thanon Thong Chai Range are 2,340 m high Doi Hua Mot Luang, the second highest peak in Thailand, Doi Pui (1,685 m), and 1,676 m high Doi Suthep. Certain hill tribe communities live in the range, like the Hmong and the Karen whose tribal villages dot the mountainsides. Some of these communities are regularly visited by organized tourist groups. Doi Inthanon was formerly known as Doi Ang Ka and was renamed in honor of King Inthawichayanon at the end of the 19th century. The vegetation is mostly deciduous forest below 1,000 m
Doi Inthanon at Doi Luang, which was then renamed in his honour. Today, the summit of Doi Inthanon is a popular tourist destination for both foreign and Thai tourists, with a peak of 12,000 visitors visiting the summit on New Year's Day. In addition to a range of tourist facilities on the summit, there is also a Royal Thai Air Force weather radar station at the summit and the Thai National Observatory (TNO) at km44. Doi Inthanon is the highest peak of the Inthanon Range () of the Thanon Thong Chai Range, a subrange of the Shan Hills in the Thai highlands