When you travel to Halong Bay, do not miss this chance to explore and visit the caves & grottoes in Halong bay, Bai Tu Long bay & Lan Ha Bay. Being well-known for its special geology, aesthetics, and archaeology values, Halong Bay, Bai Tu Long Bay, Lan Ha Bay are home to many spectacular caves & grottoes. Through the years, the natural beauty of these caves & grottoes is one of the main reasons attracting tourists from all over the world to visit, when you travel on Halong bay cruises or book Halong tours. There are the most amazing and beautiful caves such as Sung Sot (Surprise), Tien Ong, Thien Cung (Heaven), Dau Go (Wooden Stakes), Luon (Tunnel), Dark and Bright, Me Cung (Maze), Trinh Nu (Virgin). Email: halong@impresstravel.com & call to Mr. Alex Impress Travel, Halong Tours, Halong Bay Cruises cell-phone (+84) 9123 79 189