 Many boats from small speedboats to large tourist boats dock in at the Bue Marino or travel further down the coast to Cala Luna to let the passengers bath in the turquoise water or explore the caves that have been hollowed out by the sea.Almost everyone that goes to the small caves writes their name in charcoal, from a small fire, on the wall, creating a huge mass of writing across several meters of the cave wall.Due to its natural environment (the territory is included in the Gennargentu National Park) and to the quality of its waters, Cala Gonone is a popular tourist venue.