Halong bay, Vietnam

Ha Long Bay is located in Quáng 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. All these island lakes occupy drowned dolines within fengcong karst.Hạ Long Bay has an area of around 1,553 km2, including 1,960–2,000 islets, most of which are limestone. The core of the bay has an area of 334 km2 with a high density of 775 islets. The limestone in this bay has gone through 500 million years of formation in different conditions and environments. The evolution of the karst in this bay has taken 20 million years under the impact of the tropical wet climate. The geo-diversity of the environment in the area has created biodiversity, including a tropical evergreen biosystem, oceanic and sea shore biosystem. Hạ Long Bay is home to 14 endemic floral species and 60 endemic faunal species.Designated a World Heritage site in 1994, Halong Bay's spectacular scatter of islands, dotted with wind- and wave-eroded grottoes, is a vision of ethereal beauty and, unsurprisingly, northern Vietnam's number one tourism hub. Sprawling Halong City is the bay's main gateway but its dowdy high-rises are a disappointing doorstep to this site. Most visitors sensibly opt for cruise-tours that include sleeping on board within the bay, while a growing number are deciding to eschew the main bay completely, heading straight for Cat Ba Island from where trips to less-visited but equally alluring Lan Ha Bay are easily set up.
Halong Bay attracts visitors year-round with peak season between late May and early August. January to March is often cool and drizzly, and the ensuing fog can make visibility low, but adds bags of eerie atmosphere. From May to September tropical storms are frequent, and year-round tourist boats sometimes need to alter their itineraries, depending on the weather. November's sunny blue-sky days and lack of crowds make it the best time to make a beeline here.


Towering limestone pillars and tiny islets topped by forest rise from the emerald waters of the Gulf of Tonkin. Halong translates as 'where the dragon descends into the sea' and legend tells that this mystical seascape was created when a great mountain dragon charged towards the coast, its flailing tail gouging out valleys and crevasses. As the creature plunged into the sea, the area filled with water leaving only the pinnacles visible. The geological explanation of karst erosion may be more prosaic, but doesn't make this seascape any less poetic.