North to Burma and Laos. A mountainous region of Laos and the Mekong River, a natural border with the
northern Laos and Cambodia. A mountainous Luang Prabang, Phanom Dong Rak and mountain line. The Mekong River is the natural border
.West to Burma The Thanon Thongchai mountain Tenasserim mountain Salween River Rock and the River, a natural border Pakchan
.South, the Gulf of Thailand and Malaysia have Kolok river and mountain ridge is a natural border Kala Kiri
.
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