Alcantara gorge, Castiglione di Sicilia, Sicily, Italy, Mediterranean, Europe

alcantara gorge sicily italy mediterranean turquoise waters basalt formations natural beauty geological features outdoor travel landscape nature hiking canyon river scenic exploration relaxation summer tourism adventure water flow rocky terrain filters sunlight reflections greenery rugged unique formations tranquility environment wildlife escape cliffs geology pristine breathtaking remote hidden gem sightseeing discovery cultural heritage ancient pristine waters outdoor activities eco tourism