El Encierro del Pilón de Falces Activity · Falces, Ribera Alta, Navarra A traditional bull run held during the patron saint festival of the Virgen de Nieva: at 7:30, a small preliminary run drives the cows from the goat pen to the Pilón corral, and at 9:00 the starting rocket launches an 800-meter downhill run in which young men run flanked by the hillside and the ravine. Photo: Ibon (CC BY 2.0) What to see and do in Falces