Blue grotto cave (the blue cave)

Blue grotto cave (the blue cave) :
It is in the Capri island in italy this cave was creating because that there are the wave from the calcareous stones . nowadays haf of its place is full of the water because the beach go into the water the blue light radiation from the hole that it is under the water and lighted the cave .
This cave is one of the tourist places and the boat drivers with calculate ebb and flow of the water take the tourists into the cave when happening the flow the entrance of the cave is close and when the ebb is happening the cave entrance is open and tourists can go into that .

for see another pictures click here : http://i37.tinypic.com/1hd06e.jpg