A unique cave because of its eroded features.

It is one of the few caves where the mixture of fresh and salty water from the nearby Mediterranean sea have created a spectacular underground labyrinth.

The rise and fall of the tide had an important effect on the development of this cave. There are many legends on this cave about a treasure that was supposedly kept inside. In fact, during the first half of the 19th century, Antonio de la Nari, from Switzerland, spent years searching for it until he was killed by accident in an explosion. In 1918 the abbé Breuil described remains of red Palaeolithic paintings. Some authors believe that it used to be the location of the Phoenician shrine of Noctiluca, goddess of fertility, life and death.