Glaronisia
Γλαρονήσια
Four small islets off the north coast, built from neatly arranged hexagonal volcanic basalt columns that look like a sea organ. They can only be seen from a boat.
Glaronisia is a group of columnar rock formations that formed as volcanic lava cooled. The rock columns stand in straight rows, and there are sea caves that small boats can enter. It is usually a stop on north-route or island-circuit boat tours, and tour boats leaving Adamas or Pollonia pause here for photos. No landing is allowed on the islets, so visit only in calm weather.
Opening hours
Follows boat schedule