Necropolis of Santu Pedru

The Necropolis of Santu Pedru is an archaeological site located in the municipality of Alghero, in the province of Sassari, Sardinia, Italy. Situated near the road to Uri on a trachyte hill, the necropolis comprises ten Domus de Janas, rock-cut tombs dating to the pre-Nuragic period from the third millennium BC. The burial complex was used for approximately a millennium by successive cultures, including the Ozieri, Abealzu-Filigosa, Monte Claro, Bell Beaker, and Bonnanaro cultures, making it one of the most significant and stratigraphically complete prehistoric sites in Sardinia.

The necropolis was discovered in 1959 during terracing works that revealed Tomb I, which Ercole Contu excavated and named the "Tomb of the Tetrapod Vases." This initial excavation yielded a particularly rich funerary assemblage and established the first true stratigraphy of a Domus de Janas, still considered one of the most complete and important in Sardinian prehistory. The same prospection identified three additional tombs and produced a preliminary plan of the necropolis. Further excavations were conducted by Alberto Moravetti between 1989 and 1995 in Tombs II, III, V, and VII, with nearly all known hypogea excavated between 1989 and 1994. Paolo Melis resumed work on Tomb III in 2004-2005, and Tomb X was discovered in 2005 during road modification works. The site continued to be used in Nuragic, Punic, Roman, and early medieval periods, with the largest tomb converted into a church during the Byzantine era.

The necropolis contains at least nine Domus de Janas arranged along a north-south axis on the southwestern slope of the volcanic tuff hill, with traces of a tenth small artificial cave of uncertain attribution. The tombs share a common planimetric typology, generally with cells organized in a "T" pattern or with centripetal development around a central space. Access corridors are oriented southward, except for Tomb X which faces southwest. The tombs exhibit sophisticated architectural elements evoking structures of the living world, including rock-cut pillars and columns, relief bases, jambs, and pilasters, often painted red. The first two chambers, the antechamber and main chamber, are distinguished by their size, shape, and architectural details from the smaller elevated cells that open onto the main chamber. These larger spaces presumably hosted ceremonies for the dead, while the smaller cells served for actual burials.

Tomb I, the principal and most imposing monument of the complex, is structurally one of the most significant of its kind found in Sardinia. It features a 16-meter dromos leading to a semicircular antechamber measuring 5 meters in diameter and 3.10 meters in maximum height, with an incised reproduction of a radial roof and decorative baseboards and pilasters. The main chamber, an irregular quadrilateral approximately 3.50 by 6 meters and 2 meters high, contains two rectangular rock-cut pillars supporting a flat ceiling, and a false door relief on the back wall with concentric frames and traces of red paint. Nine elevated minor cells open from this chamber, their portals decorated with frames and, in one case, bovine protome horns. This tomb yielded the only tetrapod vases found in Sardinian Neolithic necropolises, giving it its alternative name. The excavation recovered 447 significant artifacts, primarily pottery from the Ozieri, Abealzu-Filigosa, Monte Claro, Bell Beaker, and Bonnanaro cultures, with particularly well-preserved Bonnanaro vessels found mainly in the antechamber and typical Bell Beaker chalice vessels, two large cuencos, and hemispherical tripod bowls found in situ in the main chamber and two cells.

The tombs were carved into the trachytic rock of the Santu Pedru hill, with the necropolis extending from the base almost to the summit, where remains of a single-tower nuraghe and a village are present. Tomb I sits at the base of the slope, slightly higher than Tomb X. The architectural complex covers approximately 18 square meters in its carved cell arrangement. The dromos of Tomb I, originally 16 meters long, is preserved to about 14 meters, partially cut by a modern road; its terminal section was likely roofed to 3.20 meters height. The antechamber's curved front wall and radial-beam ceiling reproduction, along with the false architrave, elevated portals with double and triple moldings, and painted red traces, demonstrate sophisticated imitation of domestic architecture. The threshold of all cell portals consists of a 3 to 5 centimeter high sill. The site presents characteristics similar to the necropolis of Sant'Andrea Priu and Mandra Antine in the Alghero hinterland, suggesting possible itinerant associations of tomb craftsmen.

The Necropolis of Santu Pedru is located near the road to Uri, on the outskirts of Alghero in the Metropolitan City of Sassari, Sardinia, Italy. The site is managed in connection with the cooperative Coop Silt, whose website is http://www.coopsilt.it. The necropolis is accessible as an archaeological site, with the tombs carved into the hillside offering visitors direct encounter with pre-Nuragic rock-cut architecture spanning approximately one thousand years of continuous use and later repurposing. The proximity of the modern road to Tomb I, which has encroached upon the original dromos length, indicates some impact of contemporary infrastructure on the archaeological context.