Blue Grotto Facts
- The stunning site known as the Blue Grotto constitutes an incredibly picturesque naturally occurring sea cave. As if that wasn’t enough charm, the cave also formed on the island of Capri, in southern Italy, in Europe.
- It also remains famous for the unique, naturally occurring blue lighting within the cave. That occurs due to the fact that the grotto remains lit by a unique combination of lighting from two separate sources.
- The amazing site also extends a distance of roughly 177 ft (54 m) into the cliff. In addition, the depth of the cavern measures about 492 ft (150 m). Further, the bottom of the cavern has a sandy covering.
- The gorgeous cavern also has a rather small entrance, measuring around 5 ft (1.5 m) in width, at the waterline. Yet despite this, the Blue Grotto forms one of the leading tourist attractions on the island.
Blue Grotto Lighting Effects
The Blue Grotto has an illumination consisting of an ethereal brilliant blue lighting. This startling effect occurs due to dual sources. The first comes from the small entrance at the waterline. However, the primary source of lighting actually consists of the second source.
This source is the second hole, located directly below the first. Furthermore, the two remain separated by a bar of rock measuring around 6 ft (2 m) thick. But, the second hole measures nearly 10 times the size of the upper entrance.
Thus, in a truly rare occurrence, the cave actually receives its primary lighting from below the waterline. In addition, yet another quirk of geology also exists in the cavern involving the lighting effects.
Due to the result of positioning, it remains impossible for a visitor to discern either of three separate things. These consist of the shape of the underwater hole, the outline of the stone bar, or even the nature of the lighting source.
Blue Grotto Historical Relevance
First of all, the Blue Grotto became a popular tourist spot in modern times. This primarily occurred following the 1830’s. However, evidence indicates that humans knew of its existence as far back as the Roman Age.
That’s because, before their removal, sculptures from the pantheon of Roman deities originally existed in the grotto. Experts also believe that more such statues remain at the bottom of the cave.
The Roman Emperor Tiberius also (according to legend) frequented the site after he retired to Capri. Ongoing research has also uncovered the remains of an ancient man-made landing dating to that era.
Finally, local inhabitants knew of the grotto but largely avoided it after the end of the Roman Era. In ancient times, this was primarily due to the belief that the Blue Grotto was inhabited by witches and various supernatural creatures.