Preface by Sofia Isus in the book Fia-faia. La festa de falles nadalenca, by Xavier Pedrals and Manel Escobet (2017)
Among all the fire festivities of the Pyrenees, the Fia-faia stands out because it is celebrated the day of the winter solstice, that is, Christmas Eve. It is a tradition that has been preserved for centuries in the villages of Bagà and Sant Julià de Cerdanyola (Berguedà) and, apart from being included in the UNESCO’s candidacy, the Generalitat de Catalunya classified it as a Patrimonial Festivity of National Interest.
In July 2017, Xavier Pedrals and Manel Escobet presented the book Fia-faia. La festa de falles nadalenca (Fia-faia. Christmas Falles Festivity), which has a preface written by Sofia Isus, director of the Chair.