Description[edit]
The border starts in the north at the tripoint with Laos and then proceeds overland to the south, occasionally utilising rivers such as the Tonlé San.[2] It then turns in a broad arc to the south-west, except for the Cambodian protrusion known as the Parrot's Beak, running mostly overland but also at times using rivers such as the Vàm Cỏ Đông and the Saigon. After cutting across the Mekong delta it continues southwestwards, terminating at the Gulf of Thailand just west of Hà Tiên. The maritime boundary forms a loop, so Phú Quốc island belongs to Vietnam despite it being closer to the Cambodia shore.[2]