The Supramonte, which is famous for its aboundance of subterranean water lodes, is rich in mountain caves and sea grottoes. In the Gulf of Orosei, you can visit the famous “Grotta del Bue Marino” – the Sea Ox Cave – and the “Grotta del Fico” – the Fig Tree’s Cave -, which hides a tangle of tunnels and is a real paradise for expert cave explorers. In the interior, you shouldn’t miss to visit the “Grotta di Ispinigoli” with its magnificent 30 metres high stalagtitic-stalagmitic column as well as the caves “Sa Oche” (The Voice) and “Su Bentu” (The Wind) with their incredible karstic system and their subterranean lakes.