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.
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)
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