It is one of the island’s three caves (the others are the Nigger’s grotto in the area of Vatses and the Cave of the Dragon at Vathy).
You will come across it on your way to Vathy. There you will find the chapel of Panagia Poulariani, which is built at the foot of the island’s highest mountain, Kastelano (482m height), near the sea. This Virgin Mary is the protector of sailors. The rock formation forms the shape of the Virgin Mary embracing her child.
According to tradition, during particularly bad weather conditions, a light appears from the rock, warning the sea-men.