Le Grotte di Palinuro

Palinuro is particularly famous for its 35 caves, the most important are:

Grotta AZZURRA, is called Azzurra (blue) because sunlight creates on the water wonderful blue shades thanks to a siphon (20 m deep) that makes sunlight pass. It is attainable only by sea. 
Grotta d'Argento, is called "d’argento" (silver) because of the colour of the water on the calcareous walls.
Grotta del SANGUE has water with red "blood" reflexes on it.
Grotta CALAFETENTE, the name comes from the sulphurous exhalations. The cave has the shape of an amphitheatre. Along the entrance tunnel there are some kinds of corals, never living in this part of Mediterranean Sea.
Grotta DEI MONACI, it is called "dei Monaci" (of friars) because there are some stalagmites having the shape and the colour (brown) of monks in prayer.