The tradition hands on that the church in honor of Saint Costantino was built by a sheperd from Scano Montiferro: he was enslaved by the Moors and then freed, thanks to Saint Costantino; he built the temple at Sedilo under indication of Costantino himself.
A legend maintains that the monolith present in the area of the sanctuary is a woman, turned into stone because she despised the saint's festivity. In fact it's a "bètilo", dating from the nuragic age, that represents a feminine divinity,linkedto the cult of fertility.
According to another legend, a comfit seller who came for the festival got angry, because of the bad conditions of the road, and swore at the Saint. But Costantino revenged himselfturning all his comfits into stones, still visible today along the same road.