Croatia’s “Bluest” Cave

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May 21, 2019

Croatia’s “Bluest” Cave

True Blue

The Blue Cave or Blue Grotto, as it is also called, is a sea cave found in a small bay on the island of Bisevo in the Adriatic Sea. The cave is well known as one of the most beautiful tourist attractions in the Adriatic. It is legendary for its famous glowing blue light, which can be seen at different times of the day.

 

Wave Action

A sea cave is formed by the waves of the sea, which lap continuously at the limestone rock on which the whole island was formed. The cave is 24 meters long, 12, meters deep, and around 15 meters high. It has two entrances. The first entrance is the natural opening formed with the cave. It is underwater, though, so you would have to dive to get in. This entrance, it seems, is how the cave gets its blue light. The sun shines through, hitting the ceiling of the cave and disseminating a bluish hue throughout the cave. If you enter the grotto around midday, you will delightedly observe that the sun reflects through water approaching from the white cave floor, washing the cave in an aquamarine shine, while causing objects in the water to appear silver in color.

In the late 1800’s, the cave was first described by Baron Eugen von Ransonet, who made a suggestion that a second entrance be created, in order that others might be able to access it by boat. This second entrance is how most of the 10,000 plus tourists enjoy the cave’s wonders each year.

 

Cave in to the Temptation

The Blue Cave is often highly touted as the highlight of Adriatic tours. Its fame is well-deserved, as it never fails to impress even the most seasoned tourists with its natural, wondrous beauty.