From the hinterland to the coast, the Supramonte hides a subterranean world marked by the patient labour of water. As limestone dissolves, it generates treasures such as sa rutta ‘e su Meraculu, the grotto of the miracles, which faces Cala Sisine from the feet of Baccu Erettili. Visit the mystical beauty of this gem of Baunei and you will understand the origins of its name. Over millions of years, nature has moulded the rocks, creating a succession of halls enclosed by walls with limestone formations that are veritable works of art. An expressionist scenario formed by columns, stalactites, stalagmites, pisoliths, pools and glossy floors.

The grotto continues for 200 metres, at 17° C. The foyer has a narrow corridor with cauliflower stalagmites, leading to the central hall, one hundred metres long and from four to six metres high, a splendid gallery of natural sculptures. There is also a spring, very dear to shepherds who used it in the past. The itinerary is not lacking in excitement. Among the various sculptures, one is shaped like an amphora, while a column looks like the Tower of Pisa. The “treasure hall”, pink and grey, is covered by vaults with transparent ribs that reproduce a starry sky. For a better view, climb a schist platform. The shapes are bizarre: there is an hourglass and a frog. There is even a classroom: a sturdy stalagmite is the teacher, while the shorter mounds around it look like students. The causeway was built in such a manner as to allow you to admire the profiles and have a glimpse of halls that have yet to be explored. In the ark, the slow rhythm of the water proceeds undisturbed.

Immerse yourself in the sacral Miracle atmosphere arriving from the sea, using the boat services leaving from Arbatax and Santa Maria Navarrese. Coming through land, you will get to Cala Sisine after some long, difficult and exciting trekking. From here, a track marked by pink oleanders and by the pearly grey of the pebbles in a narrow gorge, it gradually climbs all the way to the mouth of the grotto. During your stay in Ogliastra, do not miss the chance to admire the other magnificent pearls of the Gulf of Orosei: Cala Goloritzè, Cala Biriola, Cala Mariolu and Cala Luna.