nuraghe Arrubiu

The Nuraghe Arrubiu is one of the largest and most complex nuraghe structures in Sardinia, located in Orroli in the province of South Sardinia, Italy. Its name, meaning "red nuraghe" in the Sardinian language, derives from the reddish coloration of its basalt stones, though some scholars alternatively attribute this to the lichens that grow on its walls. Built around the 15th century BC, the complex originally covered approximately 3,000 square metres and comprised 21 towers, with its central tower reaching between 25 and 30 metres, making it one of the tallest structures in Bronze Age Europe. It stands as a major monument of protohistoric western Europe and has been included among 31 Sardinian sites proposed for UNESCO World Heritage status.

The Nuraghe Arrubiu was constructed around 1500 BC during the flourishing of Nuragic civilization. The site remained unknown and unexplored until the 1930s, as it lay buried under its own rubble and dense woodland vegetation. The first exploration occurred in the 1950s, but systematic archaeological investigation only began in 1981. Between 1981 and 1991, approximately ten campaigns of work cleared the site, enclosed it with fencing, conducted manual and photogrammetric surveys, and restored archaeological materials uncovered through 1990. The central tower and bastion were dated to the late 14th century BC based on the discovery of Mycenaean alabastron fragments beneath the first beaten-earth floor of the mastio. The complex suffered partial collapse and was abandoned around the 9th century BC, likely due to structural failure. During the Roman period, beginning in the 3rd century BC, the site was reoccupied and adapted for agricultural use, including wine production. Excavations resumed in 2012 with annual campaigns employing stratigraphic methodologies, and a significant portion of the complex is believed to remain unexcavated.

The archaeological assemblage from Nuraghe Arrubiu encompasses materials spanning from the Late Bronze Age through the Roman period. The Bronze Age deposits have yielded substantial ceramic vessels of all sizes, particularly large storage containers, found within the central tower's chambers. Notable finds include an amphora discovered in the floor of the central tower, now part of the exhibition, and vessels recovered from the tower's oval niches. The site has also produced significant evidence of early viticulture: geochemical analyses of ceramics from both the nuraghe and the adjacent giant's tomb constitute the oldest indisputable evidence of grape wine production in the western Mediterranean. Roman-period materials include two wine-pressing installations with superimposed sandstone vats used for grape treading and must collection. Additionally, objects of feminine use have been recovered, including spindle whorls for wool spinning, bone needles and daggers, and querns for cereals.

The most significant architectural feature is the central tower (mastio), preserved to 14-16 metres but originally estimated at 25-30 metres through comparison with other nuraghes and computer modeling based on excavated stone material and the angle of the surviving structure. Its tholos dome remains largely intact, rising 11 metres across 45 courses of masonry. The tower contained three superimposed floors, with the ground-floor chamber featuring three ogival niches and substantial evidence of fire use. The complex is the only documented example of a "pentalobate" nuraghe, with five secondary towers surrounding the central mastio. The site's wine production facilities are of exceptional importance, comprising two Roman-period wine-pressing workshops located between towers D and E and in the central courtyard B. The nearby giant's tomb, known as the Tomba della Spada, has yielded remarkable funerary goods and provides crucial contextual evidence for the site's ritual and economic significance.

The Nuraghe Arrubiu is a complex nuraghe of unique pentagonal design, covering approximately 3,000 square metres. The main structure consists of five towers surrounding the central mastio, protected by two secondary walls with additional towers, totaling 21 towers across the entire complex. The construction technique employed large stone blocks with smaller stones filling the interstices, with some vertically set ashlars used. The towers taper upward in corbel-vault fashion, often with openings at their apexes. The complex includes an sophisticated drainage system channeling water to a cistern. The site is situated on the Pranemuru plateau in the Sarcidano region, in an area called Su Prànu, characterized by sparse Mediterranean maquis vegetation used for grazing, overlooking a former ford on the Medio Flumendosa river. The surrounding area contains circular and rectangular huts from various periods, though no settlement has been found beyond three round huts in the immediate vicinity. The site is enclosed and accessible for a fee.

The Nuraghe Arrubiu is located in Orroli, in the province of South Sardinia, Italy. The site is enclosed and can be visited for an entrance fee. It is situated in the Sarcidano region on the Pranemuru plateau, in an area known as Su Prànu. The archaeological complex is included among 31 Sardinian candidate sites for UNESCO World Heritage inscription. For further information, the Museo Nazionale Archeologico di Nuoro maintains documentation of the site. The ongoing excavations, which resumed in 2012, continue to reveal new aspects of the monument's architecture and occupation history, suggesting that future visits may incorporate newly exposed areas of this exceptionally large and complex Bronze Age monument.