Rare Earth Mongcai

Ha long bay also "halong bay" is in northern vietnam, 170 km 105 mi east of hanoihe bay is famous for its scenic ocean karst topography and is often included in lists of natural wonders of the worlda long bay is a bay located in the area of the gulf of tangkia, north of the socialist republic of vietnamt has an area of 1,500 square kilometers and has a coastline about 120.