Hill tribe (, ) (Northern Thai: จาวดอย, คนดอย, ; 'mountain people/folk') is a term used in Thailand for all of the various ethnic groups who mostly inhabit the high mountainous northern and western regions of Thailand, including both sides of the border areas between northern Thailand, Laos and Burma, the Phi Pan Nam Range, the Thanon Range, the latter a southern prolongation of the Shan Hills, as well as the Tenasserim Hills in Western Thailand. These areas exhibit mountainous terrain which is in some areas covered by thick forests, while in others it has been heavily affected by deforestation.