DOI angkhang It is located on mountain land in Laos. Mae ngon, amphur Fang, Chiang Mai Province, by the word "angkhang" in the language of the North stands for quad sink according to the characteristics of DOI angkhang. Which is the DOI with the shape of the Valley about 5 km long, 3 wide and around a kilometre in the middle of high mountains original angkhang, as well as the surrounding area is limestone mountains, but since when was rain water, gradually wearing down the hole and then collapse into a melting becomes a basin. An area of no more than 200 meters wide plain which is the location of the Royal angkhang agricultural station.