Spanish riders with lances herd fighting bulls from the ranch of Condessa del Sobral through the fields in the final stretch leading into town in the third 'encierro,' or bull run, in the Fiesta de Cuellar, in Castilla y Leon, Spain, 30 August 2016. The fiesta in Cuellar is recognized as one of the oldest in Spain, dating back to 1499. The bulls are herded by hundreds of horsemen through a forest and hills for 5 kilometers and then into town where runners try their luck and skill running with the bulls. EPA/JIM HOLLANDER
Men on horseback herd a pack of fighting bulls and some steers from the ranch of Carmen Segovia towards the end of their five kilometers 'run' through the countryside outside of Cuellar, Spain, 28 August 2013. The bulls are herded by riders through pine forests and fields into town where runners hold a traditional 'encierro,' bull run, through the center of town on paved streets. The 'encierro' in Cuellar is the oldest in Spain dating back to at least 1499. EPA/JIM HOLLANDER EPA/JIM HOLLANDER
Spanish riders with lances herd fighting bulls from the ranch of Aguadulce, along with some steers, as they are herded through a forest during the fifth and final 'encierro,' or bull run, in the Fiesta de Cuellar, in Castilla y Leon, Spain, 01 September 2016. The fiesta in Cuella is recognised as one of the oldest in Spain, dating back to 1499. The bulls are herded by hundreds of horsemen through a forest and hills for five kilometers and then into town where runners try their luck and skill running with the bulls. EPA/JIM HOLLANDER
Spanish riders with lances herd fighting bulls from the ranch of Condessa del Sobral through the fields in the final stretch leading into town in the third 'encierro,' or bull run, in the Fiesta de Cuellar, in Castilla y Leon, Spain, 30 August 2016. The fiesta in Cuellar is recognized as one of the oldest in Spain, dating back to 1499. The bulls are herded by hundreds of horsemen through a forest and hills for 5 kilometers and then into town where runners try their luck and skill running with the bulls. EPA/JIM HOLLANDER
Spectators in the ferns and trees are on the side of where fighting bulls will run the first bull run, or 'encierro,' of a fiesta in Cuellar, Castilla y Leon, Spain, 28 August 2016. The bulls are herded for some five kilometers into the town where people then run with the bulls through the streets. The festival 'Fiesta de Cuella' is recognized as one of the oldest in Spain dating back to 1499. EPA/JIM HOLLANDER
A Spanish rider herds fighting bulls from the ranch of Aguadulce, along with some steers, as they are herded through a forest during the fifth and final 'encierro,' or bull run, in the Fiesta de Cuellar, in Castilla y Leon, Spain, 01 September 2016. The fiesta in Cuella is recognised as one of the oldest in Spain, dating back to 1499. The bulls are herded by hundreds of horsemen through a forest and hills for five kilometers and then into town where runners try their luck and skill running with the bulls. EPA/JIM HOLLANDER
Fighting bulls from the ranch of Luis Terron are herded by hundred of horse riders at the beginning of the run as they stampede through a pine forest on sandy terrain, some five kilometers outside the town of Cuellar, Spain, 26 August 2013, in the second 'encierro' or running-with-the-bulls in this town's fiesta. Horsemen and women herd the bulls through forests and open fields into the town where runners then test their bravery in a stampede to the bullring on the town's paved streets. The 'encierro' in Cuellar is the oldest in Spain. EPA/JIM HOLLANDER