Just 13 kilometres to the north of Chiang Mai city, on the far side of Mae Rim, lies the entrance to Mae Sa Valley. This pristine area of waterfalls, rushing streams and largely undamaged northern forest is one of Chiang Mai's great secrets. Mae Sa Valley forms part of an 80km loop road encircling the national park of Doi Suthep and Doi Pui. The entire circuit is surfaced and well maintained. Attractions-beside the tranquillity and natural beauty-include hill tribe peoples such as Hmong and Karen, as well as local Tai Yai, or Shan, who have long been settled at Mae Rim and nearby Mae Raem.