Halong Bay is made up of 1,969 islands of various sizes, 989 of which have been given names. There are two kinds of islands, limestone and schist, which are concentrated in two main zones: the southeast (belonging to Bai Tu Long Bay), and the southwest (belonging to Halong Bay). This densely concentrated zone of stone islands, world famous for its spectacular scenery of grottoes and caves, forms the central zone of Halong Bay, which has been named a UNESCO World Heritage Site.

The islands in Ha Long Bay are mainly limestone and schist islands most lying in the two main areas: the southeastern part of Bai Tu Long Bay and southwestern part of Ha Long Bay. These islands represent the most ancient images of a geographical site having a tectonic age of from 250 million to 280 million years. They are the result of many times of rising and lowering processes of the continent to form a karst. The process of nearly full erosion and weathering of the karst created the unique Ha Long Bay in the world. In a not very large area, thousands of islands with different forms look like glittering emeralds attached to the blue scarf of a virgin. The area where many stone islands concentrate has spectacular scenes and world-famous caves and is the center of Ha Long Bay Natural Heritage, including Ha Long Bay and a part of Bai Tu Long Bay.

The area is recognized as the World Natural Heritage that is the area of 434 sq. km with 775 islands. It looks like a giant triangle with Dau Go Island (in the west), Ba Ham Lake (in the south) and Cong Tay Island (in the east) as its three angle points. The nearby area is the buffer area and areas classified as national beauty spots in 1962 by the Ministry of Culture and Information.

Viewed from above, Ha Long Bay looks like an extremely vivid huge drawing. This is a wonderful and skilful masterpiece of the Creation and of nature that turns thousands of dumb soulless stone islands into fantastic sculptural and artistic works of various graceful shapes, both familiar and strange to human beings.

Thousands of islands emerging uneven in the fanciful waves look strong and magnificent but also mild and vivid. Amidst these islands we feel as if we were astray in a petrified legendary world. There are many names given to islands according to their shapes and forms. This one looks like somebody heading toward the shore: Hon Dau Nguoi (Human Head Island); that one looks like a dragon hovering above the sea surface: Hon Rong (Dragon Island); another looks like an old man sitting fishing: Hon La Vong; some look like big sails struggling amidst the wind to set off for the sea: Hon Canh Buom (Sail Island); then two islands look like a pair of chicken lovingly playing with each other above the sea: Hon Trong Mai (Male and Female Chicken Island); and amid the vast sea stands an island like a big incense burner like a ritual offering to Heaven: Hon Lu Huong (Incense Burner Island). All are so real that people are taken aback by them. Those stone islands have experienced unpredictable changes over time and they take different shapes from different angles of view. Here, we come to realize that they are not dumb inanimate things but are vivid and soulful.

Inside the stone islands are various breath-taking caves, such as Thien Cung, Dau Go, Sung Sot, Trinh Nu, Tam Cung and others. These are really magnificent palaces of the Creation on earth. Long ago, Hạ Long Bay has been called by the great national poet Nguyen Trai:“a wonder of the earth erected towards the high sky”. Many men of letters from all over the world have been taken aback at the grandiose scenery of Ha Long. They seem to get puzzled and incompetent as their treasure of vocabulary is not rich enough to depict the splendor of this place.

Hạ Long Bay is also attached to glorious pages of Vietnamese history, with famous sites such as Van Don, a bustling trade port in the 12th century, charming Bai Tho Mountain, and not very far away from here is the Bach Dang River which witnessed two famous naval battles of the Viet’s ancestors against invaders. Also, Ha Long is one of the cradles of human kind with the glorious Ha Long culture in the late Neolithic age, discovered at such archeological sites as Dong Mang, Xich Tho, Soi Nhu and Thoi Gieng.

Hạ Long is also home to great biodiversity with typical eco-systems like mangrove forest, coral and tropical forest. It is also home to thousands of plants and animals of numerous species, for example shrimp, fish and squid. Some species are particularly rare and can be found no where else.

With all this in mind, the 18th meeting of the Committee of the World Heritages of UNESCO (in Thailand on December 17th, 1994), officially recognized Halong Bay as a natural heritage site of worldwide importance.

Wherever you come from, whosoever you are and however old you are, you will certainly experience the same emotion and feeling when admiring this wonder of stone and water. And great experiences will always remain even when you leave the place. The legend of Mother Dragon and Child Dragons sending out pearls to form thousands of stone islands to stop invaders still serve as the soul of this invaluable heritage of the world.

Have you ever come to Ha Long, the unique wonder of the world of its kind, to admire and explore secretes implicit in the place?