The oldest of legends that, with different nuances and components, have existed in Sanxenxo since ancient times is undoubtedly the one related to the rites or cults of fertility, and that have as stage the hermitage and beach of Nuestra Señora de A Lanzada.

Popular belief says that the woman wishing to overcome sterility will have to go to the beach of Nuestra Señora de A Lanzada or A Lanzada el last Saturday of August, undergo a bath at twelve o’clock at night in the moonlight, during which nine waves have to hit her, to be cured of her sterility and implore the Mother of God to free her from the “meigallo”, from the evil eye, from the people who want him badly.

At dawn, after bathing in the nine waves, the devotees go to the chapel, go through the altarpiece and apse sweeping with a broom, and end the visit making the offerings that serve as request. The favors that are usually requested or agrato be said are the shelter for seamen, protection for all kinds of nervous diseases and fertility. The festival culminates with the procession of the Virgin.

Within the same belief, there is the legend of fertility after sunbathing on the rock known as the bed of the Virgin, located in the breaking of the sea at the foot of the hermitage.