Official seal of Mae Hong Son

Mae Hong Son (Thai แม่ฮ่องสอน) (also Maehongson, Mae Hong Sorn or Maehongsorn) is one of the northern provinces (changwat) of Thailand, and at the same time the westernmost. Neighboring provinces are (from north clockwise) Shan State of Myanmar, Chiang Mai and Tak. To the west it borders Kayin State and Kayah State of Myanmar again. It was formerly called Mae Rong Son (also Maerongson, Mae Rong Sorn or Maerongsorn).[1]

• http://en.wikipedia.org/wiki/Mae Hong Son