A bull from the Cebada Gago ranch falls near a runner in 1999.Luis AzanzaThe bulls enter the ring at the end of an encierro in 1999.Runners and bulls collide at an encierro in 1988.Luis Manuel FernándezRed bandanas are a symbol of Sanfermines.GettyOne of the encierros in 2000.APA bull goring a runner in the seventh encierro in 2000.Luis AzanzaThe sixth encierro in 2004.ReutersRunners falling to the ground during an encierro in 2005.Luis AzanzaA bull from the Jandilla ranch making contact with a runner in 2004.ReutersA pile-up at one of the runs in 2013.Reuters
