Peninsula (Vietnamese: Bán Đảo Cà Mau) makes up the southern tip of Vietnam. It is in Cà Mau Province, and lies between the Gulf of Thailand to the west and the South China Sea to the east. Cà Mau is a triangular stretch of land, with a maximum length of 130 miles and average height of seven feet above the sea level. Its formation is almost totally the result of the deposits of the Mekong River, which is also behind the Cape Bai formation at the tail end of the peninsula.