Dangrek Mountains

Dângrêk Range
The Dângrêk Mountains, looking east from Maw I-daeng, Thailand
Highest point
Peak	Phu Khi Suk
Elevation	753 m (2,470 ft)
Dimensions
Length	300 km (190 mi) E/W
Width	40 km (25 mi) N/S
Geography
Mountain ranges in Central and northeastern Thailand
Countries	Thailand, Cambodia and Laos
Range coordinates	14°20.25′N 103°55′E / 14.33750°N 103.917°E / 14.33750; 103.917Coordinates: 14°20.25′N 103°55′E / 14.33750°N 103.917°E / 14.33750; 103.917
Borders on	Thai/Cambodian
Geology
Age of rock	Jurassic
Type of rock	Sandstone, siltstone

The Dângrêk Range (Khmer: ជួរភ្នំដងរែក, Chuor Phnom Dângrêk; Thai: ทิวเขาพนมดงรัก, rtgs: Thio Khao Phanom Dongrak, pronounced [tʰiw kʰǎw pʰanom doŋ.rák]; Lao: Sayphou Damlek), meaning "Carrying-Pole Mountains" in Khmer, is a mountain range forming a natural border between Cambodia and Thailand.

Despite the length of the range the Dângrêk are a relatively low mountain system, the average elevation of the summits being around 500 m. The highest peak is Phu Khi Suk (Thai: ภูขี้สุข), an inconspicuous 753 m high place at the eastern end, in the Chong Bok (603 m) area, where the borders of Thailand, Laos and Cambodia intersect. Other summits are Phu Khok Yai (693 m), Phu Chep Thong (692 m), Phu Tangok (689 m), Phalan Sun (670 m), Phanom Ai Nak (638 m), Phanom Thaban (582 m) and 374 m high Khao Banthat (เขาบรรทัด), located at the western end.

The mountains of the range extend in an east to west direction, forming the southern edge of the Khorat Plateau. They stretch for 320 km from the Mekong River until they merge with the highlands of the Sankamphaeng Range in Thailand.

The northern side of the Dângrêk Mountains is gently sloping, while the sides facing southward are usually a steep escarpment that dominates the plain of northern Cambodia. The watershed along the escarpment in general terms marks the boundary between Thailand and Cambodia however there are exceptions. The main road connecting the two countries in this area cuts through a pass in the Dangrek Mountains at O Smach. A small administrative division (Amphoe) of Thailand in Surin Province, Phanom Dong Rak District, bears the name of this mountain range.