Annamite Range
mountains in Vietnam
The Annamite Range (Lao: ພູ ຫລວງ, romanized: Phū Lūang; Vietnamese: Dãy Trường Sơn, IPA: [zǎˀj ʈʂɯə̀n ʂɤ̄n]) is a major mountain range of Mainland Southeast Asia, extending approximately 1,100 km (680 mi) through Laos, Vietnam, and a small area in northeast Cambodia.
Geography
The highest points of the Annamite Range are the 2,819 m (9,249 ft)-high Phou Bia, the 2,720 m (8,920 ft)-high Phu Xai Lai Leng and the 2,598 m (8,524 ft)-high Ngọc Linh (Ngoc Pan). The latter is located at the northwestern edge of the Triassic Kontum Massif in central Vietnam. Important mountain passes are the Nape Pass and the Mụ Giạ Pass.
The Annamite Range runs parallel to the Vietnamese coast, in a gentle curve which divides the basin of the Mekong River from Vietnam's narrow coastal plain along the South China Sea. Most of the crests are on the Laotian side. The eastern slope of the range rises steeply from the plain, drained by numerous short rivers. The western slope is more gentle, forming significant plateaus before descending to the banks of the Mekong. The range itself has three main plateaus, from north to south: Phouane Plateau, Nakai Plateau and Bolaven Plateau.
Laos lies mostly within the Mekong basin, west of the divide, although most of Houaphan Province and a portion of Xiangkhoang Province (where the famous Plain of Jars is located) lie east of the divide.
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