The cave of Agios Ioannis is a revelation.
It is one of the biggest in the Cycladic group of islands, featuring a rich and impressive maze of stalactites, stalagmites and columns, as well as a rare kind of stalagmitic substance dubbed ‘’cave-milk.’’
The first chamber of the cave is adorned with enormous and uniquely-shaped stalagmites and pillars in wonderful combinations.
A full exploration takes more than two hours and visitors are advised to carry torches since there is no artificial lighting inside.
The low entrance to the cave, which is negotiated with some Pappas peak Agios Ioannis cave difficulty, is situated at a spot with panoramic views of the sea and nearby islands. It is about 30 minutes from the coast on foot and about an hour from the settlement of Panagia.
On August 28, eve of St. John the Baptist, when vespers are held inside the cave, the big chamber is wonderfully lit by the candles of worshippers.
According to traditional lore, the saint’s icon was discovered inside the cave by a shepherd who had taken shelter in rough weather.
The image of the saint was depicted on the back of his shirt when he returned to the village.