If you wish to begin your day active, join the early morning Tai Chi class on the sun deck and merge with the surrounding scenery - a truly unique experience. Breakfast is served as our cruise sails for Sung Sot, the largest cave in Halong Bay. With an astonishing area of 10,000 square meters, Sung Sot is comprised of two chambers. The outer chamber welcomes visitors with stalactites acting as chandeliers hanging from the 30-metre (98 ft) high ceiling. A connecting 3-metre (10 ft) wide path then opens onto the inner chamber, known as the grand “opera house”. This magnificent room features a clear pond, plentiful plant-life, splendid stalagmites, stalactites and rock formations formed over millions of years, and the chorus of birds singing, water flowing and sometimes, monkeys frolicking. Enjoy our brunch on board while the vessel cruises slowly through the magnificent rock formations and back towards port. Disembark and transfer back to Hanoi.