basalt columns formed after a volcanic eruption in the alcantara gorge near taormina, sicily

alcantara basalt bay beach blue boulder canyon catania columns culture downstream erode eruption etna flow formed gap gorge history italy landscape lava mediterranean mount mountain peloritani picturesque rapid ravines religion river rock sand sea secluded shore sicilia sicily sky stone summer taormina thealcantara tourism tradition trail travel tree turbulent turquoise volcanic water waterfall