Every year on January 17, pilgrims go to the Church of Saint Mary Magdalene in Rennes-le-Château to witness a mysterious light phenomenon known pommes bleues (blue apples). Around midday, the sun streams through the church’s stained glass windows, projecting numerous strange multicolored orbs that are said to resemble apples onto the religious friezes inside. The blue apples are mentioned in ancient parchments supposedly discovered by parish priest Bérenger Saunière hidden in the church altar. These papers fuelled the legends and stories that put Rennes-le-Château on the Aude tourist map. However, despite being…