Halong Bay. There is a limestone island, the number of retirement up to emerge from the Islands 1969 phiothale several larger caves are islands within the. The biggest cave in the area of the Bay is the pillar cave Grotte des wood said formerly Merveilles.
Halong Bay has 1,969 limestone islands of the islands emerge from the sea surface. Many of the islands are large caves inside. Cave, the largest cave in the Bay Area is wooden, formerly known as Grotte des Merveilles.
Long bay. A limestone Island, island of 1 969 emergent from the ocean surface. Several islands are a huge cave inside. The largest cave in the Bay Area's caves wooden pole or the original name that Grotte des Merveilles .