Halong Bay is located in Quang Ninh province, Vietnam. The bay features thousands of limestone karsts and isles in various sizes and shapes.
The bay has a 120 kilometre long coastline and is approximately 1,553 square kilometres in size with 1969 islets. Several of the islands are hollow, with enormous caves, other support floating villages of fishermen, who ply the shallow waters for 200 species of fish and 450 different kinds of mollusks. Another specific feature of Halong Bay is the abundance of lakes inside the limestone islands, for example, Dau Be island has six enclosed lakes.
Halong Bay has been inscribed by the UNESCO’s World Heritage Committee in the World Heritage List according to its outstanding examples representing major stages of the Earth’s history and its original limestone karstic geomorphologic features.