Ha Long bay (literally: Descending Dragon bay; Vietnamese: Vịnh Hạ Long) is a UNESCO World Heritage site located in Quảng Ninh province, Vietnam. The bay features thousands of limestone karsts and isles in various sizes and shapes. The Ha Long bay, dotted with 3000 limestone islets rising from emerald waters, is the best known natural wonder of Vietnam. Because of their precipitous nature, most of the islands are uninhabited and unaffected by a human presence. The site's outstanding scenic beauty is complemented by its great biological interest. The islands feature endless numbers of beaches, grottoes, and caves.