Three caves are of incomparable beauty in Astypalea.
The Negro’s Grotto (cave of Negros) at Vatses
The Cave of Negrou at Vatses has impressive stalactite and stalagmite formations that are interwoven with myths about pirates and the treasures they buried there. From the beach you can hike (45 mins) to the cave, or you can also reach it by boat.
The Cave of the Dragon at Vathi
To the north of the island, north of Mary Thomas, is the cave of the Dragonin Vathi with impressive stalactites and stalagmites. You get the Vathi by boat or by foot (about 2 hours).
Cave of Panagia Poulariani at Analipsi
The tallest mountain in the north of the island, is Kastelanno Mary Thomas. The Virgin Mary with Christ in arms said to form the rock of the church.