Sung Sot Grotto 

Early French tourists who wandered among the 10,000 square meters of this cavern dubbed this space “Grotte des Surprises”, or Surprise Cave. Sung Sot more than lives up to its name on Bon Ho Island, situated right at the heart of the UNESCO-recognised World Heritage area.

From the wharf, 50 steep stone steps lead up to the entrance, but the view is worth the effort.  The grotto features thousands of stalactites and stalagmites. Paths, lights and signposts guide you through two caves which continue to offer yet more twists, turns and, yes, surprises throughout.