Doi Inthanon, is part of a mountain range separating Burma from Thailand also known as Loi Lar Mountain Range or Daen Lao Range. This range, the westernmost 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 preserved as one of the original 14 National parks of Thailand. In 1972 and 1975 its area was increased, so it now covers 482.40 km². The park spreads from the lowlands at 800 m altitude up to the peak in 2565 m, thus covering many climatic and ecological different parts, thus with a total of 362 it has the second highest number of bird species of any national park in Thailand. The park is often called The roof of Thailand.
On the lower slope of Doi Inthanon, near the Karen hill tribe village Ban Sop Had, are the Vachiratharn waterfalls, where the river Vachiratharn tumbles over a granite escarpment.
