Mostly flat Includes Cambodian plains around Lake And the Mekong River basin A mountain range is surrounded on the north Phanom Dong Rak mountain. Mountain Line Annamite Range Cambodia have similar topography bowl or tub is in the middle of lakes and vast Mekong. Surrounded by mountains on three areas
- the east along the Annamite Range on the border with Vietnam
- the northern and northwestern mountains of Phanom Dong Rak on the border with Thailand - South and West, the Southern Appalachian Mountains. The line is the border with Thailand. Only the Southeast, only the Mekong River basin.