Con Co Island is an island located in Quang Tri province, about 15 nautical miles from Cua Viet port, Gio Linh district. Con Co island has an area of ​​​​about 4 km2, a circumference of 8 km, an altitude of 5-30 m above sea level with a slightly rounded shape. With a particularly important position as the dividing point between the Gulf of Tonkin - the southern gateway of the Gulf of Tonkin, Con Co is an outpost protecting the national sovereignty and territory, a place associated with fierce battles to protect the country's sovereignty. protect the sea and islands, demonstrating the heroic struggle tradition of the army and people of the country in general and Quang Tri in particular.