Phu Chi Fa, also Phu Chee Fah, is a mountain area and national forest park in Thailand.
It is located at the northeastern end of the Phi Pan Nam Range, 12 km to the southwest of Doi Pha Tang at the eastern edge of Thoeng District, Chiang Rai Province.
The cliff is part of an elevated area, the Doi Pha Mon sub-range, that rises near the border with Laos sloping towards the Mekong River. The highest point of the ridge is 1628 m high Doi Pha Mon.
Wikipedia https://en.wikipedia.org/wiki/Phu_Chi_Fa
Coordinates 19°51'2.952" N 100°27'14.832" E