XIV Encuentro de Bolilleras “Villa de Quel” (Arnedo, La Rioja)
Organizers: l’Asociación de Mujeres de Quel
Collaborators: Ayuntamiento de Quel
Date: Sunday, July 26, 2015
Time:  Starts at 10:00
Place:  El Plaze del Teatro
Website:  http://tinyurl.com/orm9zr2
Information:  Ayuntamiento – 041 302011

I think this event is associated with the Fiesta Pan y Queso (aka Paniqueso) de Quel, which started in 1479 and is one of the oldest Fiestas in Spain. Actually Paniqueso runs from August 5-9, 2015, but there are plenty of events leading up to the fiesta.