![EL ROCIO, SPAIN - JUNE 26: Riders ride their horses...]()
EL ROCIO, SPAIN - JUNE 26: Riders ride their horses during the 'Saca de las Yeguas' event on June 26, 2019 in Donana National Park, Spain. Every year on June 26, hundreds of wild mares are grouped together by riders at Donana National Park and taken to a livestock fair in Almonte. (Photo by Marcelo del Pozo/Getty Images)
![EL ROCIO, SPAIN - JUNE 26: Wild mares are seen...]()
EL ROCIO, SPAIN - JUNE 26: Wild mares are seen during the 'Saca de las Yeguas' event on June 26, 2019 in El Rocio, Spain. Every year on June 26, hundreds of wild mares are grouped together by riders at Donana National Park and taken to a livestock fair in Almonte. (Photo by Marcelo del Pozo/Getty Images)
![EL ROCIO, SPAIN - JUNE 26: A rider leads wild...]()
EL ROCIO, SPAIN - JUNE 26: A rider leads wild mares in Donana National Park during the 'Saca de las Yeguas' event on June 26, 2019 in El Rocio, Spain. Every year on June 26, hundreds of wild mares are grouped together by riders at Donana National Park and taken to a livestock fair in Almonte. (Photo by Marcelo del Pozo/Getty Images)
![EL ROCIO, SPAIN - JUNE 26: Riders take a break...]()
EL ROCIO, SPAIN - JUNE 26: Riders take a break during the 'Saca de las Yeguas' event on June 26, 2019 in Donana National Park, Spain. Every year on June 26, hundreds of wild mares are grouped together by riders at Donana National Park and taken to a livestock fair in Almonte. (Photo by Marcelo del Pozo/Getty Images)
![EL ROCIO, SPAIN - JUNE 26: Riders round up horses...]()
EL ROCIO, SPAIN - JUNE 26: Riders round up horses during the 'Saca de las Yeguas' event on June 26, 2019 in Donana National Park, Spain. Every year on June 26, hundreds of wild mares are grouped together by riders at Donana National Park and taken to a livestock fair in Almonte. (Photo by Marcelo del Pozo/Getty Images)
![EL ROCIO, SPAIN - JUNE 26: Rider Carmen Reales poses...]()
EL ROCIO, SPAIN - JUNE 26: Rider Carmen Reales poses during the 'Saca de las Yeguas' event on June 26 in Donana National Park, Spain. Every year on June 26, hundreds of wild mares are grouped together by riders at Donana National Park and taken to a livestock fair in Almonte. (Photo by Marcelo del Pozo/Getty Images)
![EL ROCIO, SPAIN - JUNE 26: Rider Carmen Reales during...]()
EL ROCIO, SPAIN - JUNE 26: Rider Carmen Reales during the 'Saca de las Yeguas' event on June 26, 2019 in Donana National Park, Spain. Every year on June 26, hundreds of wild mares are grouped together by riders at Donana National Park and taken to a livestock fair in Almonte. (Photo by Marcelo del Pozo/Getty Images)
![EL ROCIO, SPAIN - JUNE 26: A rider rides his...]()
EL ROCIO, SPAIN - JUNE 26: A rider rides his horse during the 'Saca de las Yeguas' event on June 26, 2019 in Donana National Park, Spain. Every year on June 26, hundreds of wild mares are grouped together by riders at Donana National Park and taken to a livestock fair in Almonte. (Photo by Marcelo del Pozo/Getty Images)
![EL ROCIO, SPAIN - JUNE 26: Riders are seen in...]()
EL ROCIO, SPAIN - JUNE 26: Riders are seen in Donana National Park during the 'Saca de las Yeguas' event on June 26, 2019 in El Rocio, Spain. Every year on June 26, hundreds of wild mares are grouped together by riders at Donana National Park and taken to a livestock fair in Almonte. (Photo by Marcelo del Pozo/Getty Images)
![EL ROCIO, SPAIN - JUNE 26: Wild mares trots past...]()
EL ROCIO, SPAIN - JUNE 26: Wild mares trots past the shrine of El Rocio during the 'Saca de las Yeguas' event on June 26, 2019 in El Rocio, Spain. Every year on June 26, hundreds of wild mares are grouped together by riders at Donana National Park and taken to a livestock fair in Almonte. (Photo by Marcelo del Pozo/Getty Images)
![EL ROCIO, SPAIN - JUNE 26: Riders lead wild mares...]()
EL ROCIO, SPAIN - JUNE 26: Riders lead wild mares during the 'Saca de las Yeguas' event on June 26, 2019 in El Rocio, Spain. Every year on June 26, hundreds of wild mares are grouped together by riders at Donana National Park and taken to a livestock fair in Almonte. (Photo by Marcelo del Pozo/Getty Images)
![EL ROCIO, SPAIN - JUNE 26: Riders make a stop...]()
EL ROCIO, SPAIN - JUNE 26: Riders make a stop during the 'Saca de las Yeguas' event on June 26, 2019 in Donana National Park, Spain. Every year on June 26, hundreds of wild mares are grouped together by riders at Donana National Park and taken to a livestock fair in Almonte. (Photo by Marcelo del Pozo/Getty Images)
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Every year on June 26, riders take to the swamps of Donana National Park, in southern Spain, for a roundup of wild horses. The horses are taken to the small city of Almonte, where they are shoed and put up for sale. The horses that don’t sell are released back into the wild.
