At 8hours, we depart for a 3- hour journey through the rich farmlands of the Red River Delta to Halong, our first destination of the day. Upon arrival, we board our private junk for a relaxed cruise on the emerald green waters of Halong Bay among the 3,000 spectacular limestone islands with a fabulous seafood lunch on board. After lunch, we visit Sung Sot Cave (Surprising Cave)-the most beautiful cave which is famous for its stunning stalactites and stalagmites. In the afternoon, we will have time for kayaking, especially adventure to Luon Cave and will be surprised by a peaceful round lake surround by vertical mountain. We will reach our next destination, Cat Ba Island in the late afternoon. Check-in hotel and free to explore Cat Ba by night.