Lan Hạ Bay (Vietnamese: Vịnh Lan Hạ) is a bay located in the Gulf of Tonkin, adjacent to Hạ Long Bay to the south and east of Cát Bà Island in Hải Phòng, northern Vietnam. Covering an area of over 7,000 hectares, the bay features a crescent shape with around 400 islands and islets, many of which are covered in dense vegetation.
It is part of the Cát Bà Archipelago and includes more than 5,400 hectares managed under the Cát Bà National Park, a UNESCO-designated biosphere reserve. The bay is known for its karst landscape, pristine beaches, and calmer waters compared to neighboring Hạ Long Bay.
Lan Hạ Bay (Vietnamese: Vịnh Lan Hạ) is a bay located in the Gulf of Tonkin, adjacent to Hạ Long Bay to the south and east of Cát Bà Island in Hải Phòng, northern Vietnam. Covering an area of over 7,000 hectares, the bay features a crescent shape with around 400 islands and islets, many of which are covered in dense vegetation.
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