The East side. Viet Nam is mount an blocking Cheonan. The North and North West Khao phanom Dong Rak mountain barrier zone Thailand The South and West. The County is Mount line to obstruct Thailand. The South East is the plains of the Mekong River.
The east side of the mountains Annan barrier Vietnam in the north and northwest. There Phanom Dong Rak mountain bounds Thailand south and west. The mountains line the bounds Thailand Southeast. The Mekong River basin
On the east side the mountain barrier Annan Vietnam . In the north and northwest. There are mountains Phanom Dong Rak Thai uro South and west side the mountain line, uro Thai the South East River Plains.