Located about 70 kilometers southwest of Chiang Mai city, the Doi Inthanon park is often called the “Roof of Thailand” because it contains the country’s highest peak. Covering approximately 482 square kilometers, the park lies within the Himalayan mountain range, with elevations ranging from about 800 meters to 2,565 meters above sea level. This range in altitude supports a rich variety of ecosystems. Lower elevations are dominated by dry evergreen and dipterocarp forests, transitioning into mixed deciduous teak and pine forests, and finally into moist evergreen cloud forests at higher levels. Above 1,800 meters, sphagnum bogs and thick moss growth are common, creating a distinctly cool and humid environment.

The park was named in honor of King Inthawichayanon, one of the last kings of Chiang Mai, who was deeply concerned about forest conservation in northern Thailand. Before his death, he requested that his remains be placed in the forest, and the area was later renamed Doi Inthanon in recognition of his efforts to protect it.

The summit is located at kilometer 48 at the end of Highway 1009 and sits at 2,565 meters above sea level, making it the highest point in Thailand. Despite its elevation, reaching the summit does not require a strenuous hike. The road leads all the way to the top, and from the parking area, visitors walk only a few hundred meters along a short path to reach the summit marker. There are no longer long trails leading directly to the peak, and the experience is less about panoramic views and more about the atmosphere of standing at Thailand’s highest elevation, often surrounded by mist and dense forest.

Near the summit is the Princess Sirindhorn Neutron Monitor, a scientific facility that reflects the park’s role beyond tourism. Established through international collaboration among Thai, Japanese, and American universities, the facility was officially dedicated in January 2008, with Princess Sirindhorn in attendance. Its presence adds an unexpected scientific dimension to the summit area.