The symbol of Milos, Kleftiko, is a group of peculiar sea rock formations with a labyrinth of caves. It can be found on the southwest coast of the island, accessible only by boat (there is also a footpath but the access is difficult and the place is not safe since it is close to the viper reserve of Milos).
Usually a trip to Kleftiko includes swimming around the rocks and a separate visit of the caves with a smaller inflatable boat. There is no beach except for a tiny rocky strip, and the cruise boats cast their anchors between the rocks.
The cruise boats depart from the port of Adamas and from a few places on the south coast of the island.