The Sinis Peninsula

A Coastal Paradise of Quartz Beaches, Ancient Ruins, and Untamed Nature in Cabras

The Sinis Peninsula, located in the southern part of the Gulf of Oristano within the municipal territory of Cabras, offers an extraordinary landscape ranging from rocky southern shores and pristine quartz beaches to high limestone cliffs stretching up to Capo Mannu. Part of the historic Campidano di Oristano region—once belonging to the medieval Giudicato of Arborea—this coastal territory is renowned for its wetlands of immense naturalistic value, rare fauna, and deeply rooted traditions.

San Salvatore del Sinis and the Hypogeum

San Salvatore del Sinis is a medieval village steeped in mysticism, famously used in the mid-1960s as a set for spaghetti western films due to its resemblance to a Far West settlement. At the center of the village stands the 17th-century Sanctuary dedicated to Christ the Savior, surrounded by traditional rural lodgings known as cumbessias. The sanctuary is built directly atop the Hypogeum of San Salvatore, a subterranean prehistoric sacred site developed around a healing water well during the Nuragic era, later reused by Romans in the 4th century. The hypogeum walls feature ancient inscriptions, pagan deity frescoes (Aphrodite, Eros, Nymphs, and Hercules), and early Christian symbols.

The village is the dramatic destination of the famous Corsa degli Scalzi (Run of the Barefoot), held during the first weekend of September. Hundreds of barefoot runners (curridoris) dressed in white tunics carry the statue of Christ the Savior on a nine-kilometer run from Cabras to the sanctuary, commemorating the historic rescue of the sacred image from Saracenic raiders.

San Giovanni di Sinis and Tharros

Located on the southern coast of the peninsula, San Giovanni di Sinis preserves the Sanctuary of Saint John the Baptist, one of Sardinia’s premier examples of early Christian and Byzantine architecture, erected around 470 AD with a Greek-cross plan and later modified by Benedictine monks in the 11th century. Nearby lies the ancient Phoenician, Punic, and Roman city of Tharros, founded in the 8th century BC near the pre-Nuragic village of Su Muru Mannu. Tharros served as a thriving maritime and commercial hub, later becoming the first capital of the Giudicato of Arborea before its abandonment in 1070 due to pirate raids. Today, the archaeological park reveals monumental Roman baths, streets, residential quarters, a tophet, and the ruins of the early Christian basilica of San Marco.

The promontory is dominated by the monumental Tower of San Giovanni, a 16th-century Spanish coastal defense tower, and terminates at Capo San Marco, featuring a 1924 lighthouse and panoramic views overlooking the Gulf of Oristano and Mal di Ventre Island.

Quartz Beaches and Natural Wonders

The western coastline of the Sinis Peninsula is famed for its breathtaking beaches and unique quartz-sand formations:

• Is Arutas: Globally renowned as the “quartz beach,” featuring tiny, translucent, pearl-like quartz grains resembling rice grains that shimmer in shades of white, pink, and green under the Mediterranean sun.

• Maimoni Beach: A vast, solitary beach backed by rare quartz-sand dunes and Mediterranean scrub, highly favored by surfers.

• Mari Ermi and Portu Suedda: Expansive coastlines bordered by dunes and wetlands, offering crystal-clear turquoise waters and consistent thermal winds popular among windsurfers and kitesurfers.

• Oasi di Seu: A protected WWF oasis and municipal park set on a limestone promontory, featuring dense Mediterranean scrub, scenic trails, and the Aragonese coastal watchtower known as Turre ’e Seu.

• Su Tingiosu Cliffs: Impressive white limestone cliffs rising over 25 meters above the sea, interspersed with freshwater springs and serving as an ideal haven for birdwatching.