Originally, it was a small natural cavity housed in a rock of quartz-veined schist. The place name took on a sacred character with the installation of a statue of the Virgin, on October 30, 1892. The initiative for this sanctification came from the owner of the place, Mrs. de la Vingtrie.
In 1909, she decided to have a cave dug there. The one in Montreuil-sur-Maine, north of Angers, was taken as a model. The statue, as well as that of Bernadette, were blessed by Abbot Bimier, head of the Beaupréau college (now the Dom-Sortais school complex), on July 17, 1910. The fiftieth anniversary of the cave was celebrated on July 10, 1960. Then, the rain made access to the site difficult, because the slope is steep, so a tarmacked path was built in August 1966. The following year, on August 15, the annual pilgrimage began. Finally, August 15, 1992 was the occasion to celebrate its centenary.