Festivities of Muel Activity · Muel, Campo de Cariñena, Zaragoza Image of Muel, not of the place itself. Festivities of Muel on 3 February, for San Blas, with roscón cakes carried in procession; the main festivities, from 7 to 12 September, honour the Virgen de la Fuente with mass and a procession to her hermitage on the 8th. Photo: Creasy (CC BY-SA 3.0) What to see and do in Muel