Above the hypogeum, towards the end of the seventeenth century, a church dedicated to the Savior was built. It is a simple structure with a rectangular plan. Originally, the building consisted of a single nave. Currently, however, the interior of the small church consists of two naves separated by sandstone pillars. In the right nave, vaulted with a barrel ceiling, is the sacristy. In the quadrangular presbytery, there are three niches. During the nineteenth century, the church underwent modifications related to the expansion of the right nave. Description: A polychrome simulacrum representing Jesus the Savior, attributable to the 1700s. The statue, about 80 cm tall, depicts Christ with a beard: with his left hand, he holds a small globe symbolizing the world, while with his right hand, he raises a bouquet of flowers. The simulacrum, placed inside a litter, is the object of worship, the focal point of the procession-race that takes place, completing the novena, on Saturday morning and Sunday evening of the first week of September. Entered into use: between the year 1700 and the year 1799 Image: Statue
Original location of the Sanctuary: On the walls of the hypogeum, numerous images depicting vessels, mostly isolated ships, are still visible, which could be evidence of maritime ex-votos. In the church, however, there are no attestations of ex-votos.

The Sanctuary consists of a hypogeal building, which became a Christian place of worship in the 6th century AD. This is documented by the presence, in the first chamber to the left of the entrance, of an altar of Christian typology. Towards the end of the seventeenth century, a church dedicated to the Savior was built on the area above. In this work, therefore, much information concerns the church as the current site of liturgical functions.
The legend related to the foundation of the seventeenth-century church tells that the shrine built above the ancient hypogeum was erected by a farmer who, while plowing the fields, saw the cart pulled by the yoke of oxen sink into a chasm that had formed in the ground. Probably, he himself was dragged into the sandy vortex. The farmer vowed that, in exchange for a miraculous rescue, he would build a church in honor of the Holy Savior. The legend is published in G. Pau, Il Sinis, STEF, edizioni della Torre, 1979, chap. V, p. 51.
A tradition that was restored about twenty years ago is that of the procession of a small simulacrum (Santu Srabadoreddu) by a group of barefoot Cabraresi women in folk costumes. The procession departs from the village of Cabras on the last Friday of August, the day when the novenas dedicated to San Salvatore begin, and arrives in the village of the same name. The wooden simulacrum is placed in the small church where it remains for the duration of the novena: indeed, on the Monday following the end of the celebrations, in the morning, the procession of women takes place, returning the small statue to Cabras, in the parish church of the Assumption of the Virgin. The departure from the village is preceded by the celebration of Mass. This marks the conclusion of all the rites officiated in honor of the Savior. It seems that this custom is linked to a historical event that occurred at the beginning of the sixteenth century (1509) when the village of Cabras suffered Barbary raids: indeed, during the armed defense carried out by the men, the women took care to save the statue of the Saint. It seems that, in memory of this event, until 1913, it was the women who transported the simulacrum from Cabras to San Salvatore. Subsequently, men took over, who still maintain the tradition with the barefoot race.
The parish of Cabras, whose founding date is unknown, was elevated to a pieve on July 10, 1834. However, it is worth noting that the original parish was that of Santa Croce or Santo Spirito. The village of San Salvatore, around the mid-1960s, was adapted as a film set for the recording of a western movie: indeed, the small rural settlement took on the characteristics of a Mexican village equipped with a saloon, a fountain, and an arch that disappeared in 1990 following a fire.
No data has been found regarding jurisdiction.
It is known that the Archbishop of Oristano, on October 3, 1830, during a pastoral visit to the parish church of Cabras, recommended to the parish priest the obligation of spiritual care for the small church.