Ba Ham Lake, Lan Ha Bay
Obviously, the World Heritage Site Halong Bay is one of the main reasons tourists heading to North Vietnam. Lying far southwest of Halong Bay but close to Cat Ba Island, Ba Ham Lake is actually located on Dau Be Island (Calf Head) in Lan Ha Bay. The lake is a system containing three wide and round pits, connected with each other with a narrow and winding tunnel. According to the logic of corridors of water that runs between three tunnels”, it is named “Ba Ham Lake” by local people. It really amazes all visitors by its tranquil atmosphere, vertical cliffs and breathtaking natural settings.