HA Long Bay is located in the western coast of the Gulf of Tonkin, includes the waters of Halong city, the city of Cam Pha and parts of van Don Island District, Quang Ninh province. HA Long Bay has 75 miles of coastline, an area of approximately 1,553 square kilometres include 1,969 Islands, mostly limestone islands, of which the core region of the Bay has an area of 335km square kilometers of dense clusters 775 Islands.
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