Attractions Caves A Guide to The "Dark and Light" Cave Halong bay Bo Nau Cave: A Guide To The "Pelican" Cave Dau Go Cave: A Guide To The "Wooden Head" Cave Explore Halong's Smallest Cave: Luon Cave Explore Hanh Cave - The Longest Cave in Halong Bay Ho Dong Tien Cave - A Guide To The "Fairy Lake" Cave Kim Quy Cave: A Guide to The "Golden Turtle" Cave Me Cung Cave - A Guide To The Oldest Cave in Halong Bay Sung Sot (Surprise) Cave: Explore The Biggest Cave in Halong Bay Tam Cung Cave: A Guide To The "Three-palace" Cave Thien Cung Cave: A Guide To The "Heaven Palace" Cave Trinh Nu Cave: A Guide To The “Virgin Cave”