The Supramonte is a mountainous complex characterised by carbonatic highlands and dolines. With an area of around 35,000 hectares, it also takes in the long stretch of coastline of the Golfo di Orosei and it falls within in the territorial areas of the municipalities of Oliena, Orgosolo, Urzulei, Dorgali and Baunei. Enormous rocky bastions characterise the landscape, alternating with deep canyons and rocky peaks that tower into the sky. The Supramonte, for ease, is divided according to the territories of the municipal areas in which it falls. The Supramonte of Dorgali falls among the valleys of the Flumineddu and the Cedrino and also contains the basin of the Lanaittu. On the border with the valley of Lanaittu a steep calcareous mountain rises, that was home, inside an enormous doline, to the spectacular Nuragic village of Tiscali. The gorge of "Su Gorroppu" is remarkable: deep and narrow, it separates the Barbagia from the Ogliastra. It is a splitting between the calcareous mountains of Dorgali and those of Oliena and it makes a favourite shelter for rare species of birds of prey. Its extends as far as the coast up to Cala Luna with characteristic examples of calcareous rock, smoothed walls and large fissures. Numerous caves open out onto the coast, among which that of Bue Marino famed for the presence of the monk seal in times past.