In this excursion you will discover all the secrets of the geology of the island of Ustica! We will go to the beautiful area of the spreader, dominated by the Punta Cavazzi lighthouse where they will meet and be explained to you: magnetic rocks called “dazzling” that make compasses go crazy, a terrestrial cave that leads to the sea, fascinating basaltic colonnades inserted in a beach re-emerged, rocks that have a science fiction with the characteristic of illuminating and a fault highly studied by geologists from all over the world. All in a wonderful scenery that has the sea as background and the black cliff shaped by ancient lava eruptions as a frame.