A small agricultural village of the Barigadu area, Ardauli stands on a trachytic plateau known as "Culunzu Pertuntu", the perforated rock. According to a popular legend a long time ago, the perforated rock was used as a mooring point for vessels, when the sea used to come in as far as, what is nowadays, the valley where the Rio Canale flows. The village overlooks a green valley bordering on the southern shores of Lake Omodeo, characterised by unspoilt vegetation and by a number of rock formations modelled by atmospheric agents. The morphology of the area together with its vegetation make it the ideal habitat for many species of animals like hares, foxes, weasels, wild cats, deer, boars and martens.
In this extremely fertile area, there are still plenty of traces of the different kinds of agricultural activities carried out here in the past. it is not difficult to come across old water mills, mill stones, spaces for the working of grain and the "lacos", the huge tanks used for pressing grapes. In the inhabited centre it is well worth visiting the Parish Church of 'Santa Maria della Guardia', built in the first decades of the XVII century in Gothic-Catalonian style. The building was built on the initiative of the Rector, Giossanto Cossu to comply with the wishes expressed in the will of his predecessor Sebastiano Dessì, who on his death had left his riches for the construction of a new parish church. The structure is made up of a single room with a nave and four chapels on each side. The chapels nearest to the presbytery have an octagonal floor-plan with a cross-vaulted ceiling. The façade, adorned with a large rose window and flanked by a bell tower built in around the eighteenth century, has a number of elements in classical style like the portal at the entrance surrounded by decorative elements.
Inside a number of styles are blended together. there are examples of denticulated cornices inspired by the Renaissance and the half-columns of the presbytery are of clear Baroque origins. Overlooking the shores of Lake Omodeo, at an altitude of about 400 metres, we find the little country Church of San Quirico. The building, constructed around 1100, is surrounded by several "cumbessias", traditional dwellings belonging to families from the village and where they stay during the celebrations for the saint. The country church and "cumbessias", so common in the Barigadu area, recall a tradition which even goes back as far as the Nuraghic period. Even now, for the nine days before the saint's day, the "sos noventones" (believers), move into the "cumbessias" as part of the religious and popular celebrations.