Originally Posted by *Lars*

It is a natural cave and when the sunlight passes through the underwater cavity and shines through the seawater it creates a blue reflection that illuminates the cavern. The Blue Grotto has become the emblem of the island of Capri. The cave was discovered during the Roman times and it is a adorned with statues
You can reach the Grotto with motor boat or via bus or taxi from Anacapri. To enter the low opening to the grotto, you must lie in the bottom of the boat as it is rowed in.