Bai Tu Long Bay is in the northeast of Vietnam. It covers a sea area of Halong City, Cam Pha Town and Van Don island district. It is adjacent to Halong bay in the southwest, to Campha district in the west,
Sung Sot cave is the most famous cave in Halong Bay which is in the centre of the UNESCO World Heritage area. Sung Sot cave means Surprised Cave or Amazing Cave is on Bo Hon Island
Located in the northeastern region of Vietnam, Ha Long Bay is a bay in the Gulf of Tonkin and is comprised of 1,969 islands. Comprised of limestone and schist, this dense zone of stone islands form a magnificent view of immense peaks, grottoes and caves throughout the bay. It is also a region filled with coral reefs and water-flooded forests housing thousands of species of plant and animal life.