Climate
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The bay is a sea islands in tropical wet with 2 seasons: hot and moist summer, dry and cold winter. Average temperature is from 15°C- 25°C. Annual rainfall is between 2000mm and 2200mm. Halong bay has the typical diurnal tide system (tide amplitude ranges from 3.5-4m). The salinity is from 31 to 34.5MT in dry season and lower in rainy season.
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| Climate HaLong |
History
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Soi Nhụ culture (16000- 5000 BCE)
Located in Hạ Long and Bái Tử Long, there are symbolic archaeological sites such as Mê Cung, sexest bay, and Thiên Long. There are mounds of remains of mountain shellfishes (Cyclophorus) and spring shellfishes (Melania), some fresh water mollusk and some rudimentary labour tools. The main living procedures of Soi Nhụ's habitants were catching shellfish and fish, collecting fruits and digging for bulbs and roots. Their living environment is coastal area unlike other Vietnamese cultures, for example those found in Hoà Bình, Bắc Sơn, etc.
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| HaLong History |
Visit HaLong Bay Destination P1
Cái Bèo culture (5000- 3000BCE)
Located in Hạ Long and Cát Bà island, its habitants developed to the level of sea exploitation.
Hạ Long culture (2500- 1500BCE)
Feudal period
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History shows that Halong Bay has been the setting for local naval battles against Vietnam's coastal neighbours. On three occasions in the labyrinth of channels in Bach Dang river near the islands the Vietnamese army stopped the Chinese from landing. In 1288 General Tran Hung Dao stopped Mongol ships from sailing up the nearby Bach Dang River by placing steel-tipped wooden stakes at high tide, sinking the Mongol Dubhai Khan's fleet.
During the Vietnam War, many of the channels between the islands were heavily mined by the navy of the United States, some of which pose a threat to shipping to this day.
The surrounding land region of Halong City is rich with high grade coal deposits (anthracite), and is operated by the Vietnamese government.
HaLong Bay - Continue P3
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