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Dating back to the 6th–7th century, the sanctuary is considered one of the oldest sites of Marian devotion in Sardinia; it was built over the remains of a pre-existing Nuragic settlement, a Roman village, and a late-imperial Roman bath complex from the 5th century.
Ancient bridge
Dating back to a period between the 7th and 10th centuries AD and built with a "donkey-back" (arched) profile featuring three spans, this bridge was constructed using small basalt blocks bound with lime mortar, while the arches were fashioned from squared blocks of red trachyte.