Blue Grotto
This is the most famous sea grotto. Known in roman times, the grotto was rediscovered by a german writer called with help of a local fisherman in 1826. An ancient cavern of karst origin it sank by 15-20 m (49 ft - 65 ft) in remote times partly below the level of the sea. The entrance, which is about 2 m (6.5 ft) wide, is just one meter above the normal sea level. The spectacular blue color of the water inside the cave and the reflections on the walls are due to the fact that the daylight is refracted through a wide underwater aperture. The grotto is closed if the sea is too rough. "Close to the surface of the water, and not far from where I stood. I saw a clear blue star cast a single, long ray of light, pure as ether, over the mirror of the water..."Hans Christian ANDERSEN".
Have a look at our website ** www.cassiopea-positano.com ** to see pictures (PHOTOGALLERY), our basic offerings & details of our other tours.
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This is the most famous sea grotto. Known in roman times, the grotto was rediscovered by a german writer called with help of a local fisherman in 1826. An ancient cavern of karst origin it sank by 15-20 m (49 ft - 65 ft) in remote times partly below the level of the sea. The entrance, which is about 2 m (6.5 ft) wide, is just one meter above the normal sea level. The spectacular blue color of the water inside the cave and the reflections on the walls are due to the fact that the daylight is refracted through a wide underwater aperture. The grotto is closed if the sea is too rough. "Close to the surface of the water, and not far from where I stood. I saw a clear blue star cast a single, long ray of light, pure as ether, over the mirror of the water..."Hans Christian ANDERSEN".
Have a look at our website ** www.cassiopea-positano.com ** to see pictures (PHOTOGALLERY), our basic offerings & details of our other tours.