The cave, on the east side of the Railay Bay is famous for its wonderful stalactites and stalagmites. Since ancient times, Phra Nang (Princess) Cave has been where fishermen, before going out to sea, have made offerings to the symbolic Phallus of Shiva (known as the Siwaleung or Palad Khik in Thai).
The fishermen, who say the cave is the home of a mythical sea princess, believe their offerings will bring them success in their fishing and protect them from danger, but what is more remarkable is that the cave contains a large collection of carved wooden phallic symbols, offerings and other objects believed to help with fertility.