Thailand , Thailand is the 50th-largest country by total area. It is slightly smaller than Yemen and slightly larger than Spain. Thailand comprises several distinct geographic regions, partly corresponding to the provincial groups. The north of the country is the mountainous area of the Thai highlands, with the highest point being Doi Inthanon in the Thanon Thong Chai Range at above sea level. The northeast, Isan, consists of the Khorat Plateau, bordered to the east by the Mekong River. The centre of the country is dominated by the predominantly flat Chao Phraya river valley, which runs into the Gulf of Thailand.
Doi Inthanon ecological areas regions, the park supports a range of animal species, including over 360 bird species. On the lower slopes of Doi Inthanon, near the Karen hill tribe village, Ban Sop Had, are the Wachirathan waterfalls (), where the Wachirathan (lit. "Diamond Creek") tumbles over a granite escarpment. The climate is typically tropical and fairly cool on the summit of Doi Inthanon. In winter the average temperature is 6 °C (43 °F) in January and temperatures can sometimes drop below 0 °C (32 °F). On 21 December 2017, an all-time low temperature of minus-5 °C was recorded at 06:30 at