On our last trip to the Amalfi Coast we visited the Isle of Capri.
No visit there is complete without a visit to the Blue Grotto.
The experience is a bit physically demanding as you have to climb down some stairs to the loading area.
Once there you have to step in the back of the boat and sit down quickly. There is assistance from the captain of the boat of course, and any reasonably fit person can do it with ease.
There is also assistance for the disabled. Everyone can enjoy the beauty of the Blue Grotto experience.
Once you are seated in the boat, the captain rows towards the opening to the grotto. The opening is small, so the boat occupants must lean back and down low so as to enter the grotto safely.
Once inside, the appearance of the blue water is amazing. It is a natural color due to the sunlight entering under the grotto.
In the Blue Grotto, the light comes from two sources. One is a small hole in the cave wall, precisely at the waterline, that is a meter and half in diameter. This hole is barely large enough to admit a tiny rowboat, and is used as the entranceway. In photographs taken from within the cave, the above-water half of this hole appears as a spot of brilliant white light, as you can see in my photograph.
The second source of light is a second hole, with a surface area about ten times as large as the first, which lies directly below the entranceway, separated from it by a bar of rock between one and two meters thick. Much less light is able to enter through the lower opening, but its large size ensures that it is, in practice, the primary source of light.
In part because of the dazzling effect of the light from the above-water opening, it is impossible for a visitor who is in one of the row-boats to identify the shape of the larger hole, other than a general awareness that the light is coming up from underneath.
In all, the experience lasts about 30 minutes or so, but it is a must see while visiting Capri.