Orroli, Arroli (downy oak) in sardinian language, (Arrólli in Sardinian language) is, a comune (municipality) in the Province of Cagliari in the Italian region of Sardinia, located about 67.4 kilometres (41.9 mi) north of Cagliari. As of 31 December 2010, it had a population of 2,430 and an area of 75.6 square kilometres (29.2 sq mi). Orroli territory hosts one of the most important nuraghi of Sardinia called Nuraghe Arrubiu, the only intact example of a five-tower nuraghe, one of the dam in the Flumendosa river and the dam of the Mulargia, which gave name to the artificial lake. Within the village there are many hostels and bed and breakfasts organized around old lifestyles and ancient traditions.