Hang Sung Sot
One of the largest caves in the Halong area, Hang Sung Sot was dubbed the Cave of Marvels by the French upon discovery. The narrow passageways open into a massive interior cavern with a 30 metre ceiling illuminated by multicolored fluorescent lights. The artificial additions may not be to everyone’s taste, but the space is impressive nonetheless. Look for stalagmites and stalactites in the shape of young couples, a multitude of animals and even the Virgin Mary.