Casteddu Etzu (Montiferru Castle)

The Montiferru castle, also known as Casteddu Etzu, is a ruined castle dating back to the 12th century; rises in the municipality of Cuglieri, province of Oristano on a trachytoid phonolite hill of the Montiferru mountain range from which it is possible to admire a 360 degree panorama.
Source: it.wikipedia.org/wiki/Castello_del_Montiferru

Montiferru Castle, now known as "Casteddu Ezzu", was probably built in the 12th century by Ittocorre, brother of the judge Barisone di Torres, with the aim of protecting the borders with the Kingdom of Arborea. In the 13th century the castle, together with the neighboring territories, was annexed to the Arborea judiciary by Prince Mariano II. From the fifteenth century it fell into the hands of the Zatrillas family, who kept it for the following centuries, precisely until 1670, the year in which it was definitively abandoned. History tells that Donna Francesca Zatrillas, wife of Agostino Castelvì and Marquise of Laconi, took refuge here in 1668 to avoid accusations of having killed her husband and plotting against the viceroy. The Marquise finally managed to escape and embark for Livorno.
The material hardships of Casteddu Ezzu are limited to the remains of towers, wall coverings and underground rooms, presumably with the function of cisterns. The castle, whose plan was elongated, enclosed within its walls a series of rooms, traces of which are preserved at the foundation level, but whose functions are not known.
Source: sardegnacultura.it/j/v/253?s=17897&v=2&c=2465&c1=2635&visb=&t=1