Doi Pha Hom Pok National Park Doi Pha Hom Pok National Park Doi Pha Hom Pok National Park (), formerly known as Mae Fang National Park and Doi Fa Hom Pok National Park, is the northernmost national park in Thailand. It straddles Fang, Mae Ai, and Chai Prakan Districts of Chiang Mai Province. The park covers 524 km of the mountain area of the Daen Lao Range, at the border with Myanmar. The tallest peak is Doi Pha Hom Pok at , the second highest in Thailand. Doi Pha Hom Pok National Park is mostly covered with forest, where tree species such as "Hopea odorata" predominate
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