Festivities of Herrera de los Navarros Activity · Herrera de los Navarros, Campo de Daroca, Zaragoza Image of Herrera de los Navarros, not of the place itself. Herrera de los Navarros celebrates its patronal festivity in honor of the Virgen de la Sierra on 8 and 10 September, with a pilgrimage to the sanctuary on the 10th; it also celebrates San Blas in February, with the distribution of the traditional rollo (bread loaf), San Isidro on 15 May and San Antón on 16 January. Photo: Diego Delso (CC BY-SA 4.0) What to see and do in Herrera de los Navarros