Wave of sea cave 3
When a wave hammers into a seashore wave, a weak part in a cliff is being shaved, and a cave is built.
A cave in the sea where it's possible in this way is called sea cave.
A copy of ceiling of the big sea cave is deformed, and Ryuguu Cave of a maggot is a skylight of about 50 meters of diameter.
The one which opened.
On the wall there is a skylight of Ryuguu Cave in all part in Izu, but even Naka is maximum, and which is a cave, submarine volcano
A contrast with the blue seawater by which the yellowish brown lapillus which spouted vanity layers and fills the bottom of a skylight beautifully.