HA Long Bay (Bay where the Dragon land) is a small Bay on the West coast of the Gulf of Tonkin in North Vietnam sea areas, including the Sea Island in HA Long city, Cẩm city Pedigree and part van Don Island District of Quang Ninh province.Is the Centre of a large area there are elements more or less similar in geology, geomorphology, landscape, climate and culture, with the Northeast Bai TU Long Bay and Catba Island, Halong Bay's Southwest limits in an area of approximately 1,553 km ² including 1,969 Islands mostly limestone islands, of which the core region of the Bay has an area of 335 km ² Island 775 dense clusters [1]. Tectonic history of the limestone geology of the Gulf has spent about 500 million years with the ancient geographical circumstances are very different; and complete Karst evolution spent over 20 years with a combination of factors such as the thick limestone floors, hot and humid climate and lifting the slow tectonic process on the overall [2]. The combination of climate, environment, geology, geomorphology, Ha Long Bay become clusters of biodiversity, including ecosystem-evergreen forests tropical rain and coastal and marine ecosystems with many minor ecosystems [3]. 14 species of endemic flora [4] and about 60 species of endemic animals [5] has been discovered among thousands, of plant populations in the Bay.The results of this research, archaeological survey and culture studies showed the presence of these prehistoric residents on HA Long Bay from quite early on, had created the ancient culture followed including the culture in the approximately 18,000-Javanese Soi 7,000 years BC, the culture of The water hyacinth in the 7,000-5,000 years BC [6] and the culture today is about from 3,500-5,000 years [7]. The process of building and water retention of the traditional peoples of Vietnam, during the historic journey, also confirmed the location and the cultural position of the Halong Bay through the places where the name associated with the dictionary remains handed to the present, as the mountain poems, hang the top of the wood Fire, the beach [7] etc now , Ha Long Bay is a region of dynamic development thanks to the conditions and advantages available as there is a great potential in tourism, scientific research, aquaculture, fishing and aquaculture, marine traffic for the area of the waters of the North-East of Vietnam and North Vietnam in General [8].From more than 500 years ago in the poem Reveal enter van Don, Nguyen Trai was first hailed Halong Bay is the "wonders of the rock between sky high" [9]. In 1962 the Ministry of culture and information (Vietnam) has rated Halong Bay is the vestige of simultaneous national regional planning protection [10]. In 1994 the core region of Halong Bay UNESCO world natural heritage site with aesthetic value (criteria vii), and was recognized twice with the foreign exchange value of the global class in geology-geomorphology (standard viii) in 2000 [11]. Along with lang and Nha Trang Bay of Vietnam, Halong Bay is one of 29 of the Bay are the most beautiful bays Club world ranking and officially recognized in July 2003 [12].Along with Halong Bay CatBa Island form a in 21 first national tourism zone in Vietnam. In 2015, the cultural heritage Bureau has announced about the number of visitors of HA Long Bay is over 2.5 million passengers. [13]
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