Most of the area is the Plains consist of Plains around Lake Khmer Mekong River Plains.There are mountains around North mountain range, Khao phanom Dong Rak, is Mount lines. Annam mountains.
The area is mostly flat Includes Cambodian plains around Lake And the Mekong River basin surrounded by mountains to the north is the Phanom Dong Rak. Mountain Line Annamite Range
Most of the area is flat. Consists of plains around the Tonle Sap. The Mekong River and mountain north plains have is Phanom Dong Rak mountain range mountain line. The annamite range.