A man rides through the flames on a horse during the “Luminarias” annual religious celebration on the eve of Saint Anthony's Day in the village of Alosno, southwest Spain, January 16, 2015. According to a tradition that dates back 500 years, people ride their horses through the narrow cobblestone streets of this small village to purify the animals with the smoke of the bonfires. Saint Anthony is the patron of animals. (Photo by Marcelo del Pozo/Reuters)

A horse rider drinks wine next to a bonfire during a ritual in honor of Saint Anthony the Abbot, the patron saint of domestic animals, in San Bartolome de Pinares, about 100 kilometers (62 miles) west of Madrid, Spain on Friday, January 16, 2015. On the eve of Saint Anthony's Day, hundreds ride their horses through the narrow cobblestone streets of the small village of San Bartolome during the “Luminarias”, a tradition that dates back 500 years and is meant to purify the animals with the smoke of the bonfires and protect them for the year to come. (Photo by Andres Kudacki/AP Photo)

A man rides a horse through a bonfire as part of a ritual in honor of Saint Anthony the Abbot, the patron saint of domestic animals, in San Bartolome de Pinares, about 100 kilometers (62 miles) west of Madrid, Spain on Friday, January 16, 2015. (Photo by Andres Kudacki/AP Photo)

People ride through the flames on horses during the “Luminarias” annual religious celebration on the eve of Saint Anthony's Day in the village of Alosno, southwest Spain, January 16, 2015. (Photo by Marcelo del Pozo/Reuters)

Men ride through the flames on horses during the “Luminarias” annual religious celebration on the eve of Saint Anthony's Day in the village of Alosno, southwest Spain, January 16, 2015. (Photo by Marcelo del Pozo/Reuters)

People watch as a man rides through the flames on a horse during the “Luminarias” annual religious celebration on the eve of Saint Anthony's Day in the village of Alosno, southwest Spain, January 16, 2015. (Photo by Marcelo del Pozo/Reuters)

A man rides through the flames on a horse during the “Luminarias” annual religious celebration on the eve of Saint Anthony's Day in the village of Alosno, southwest Spain, January 16, 2015. (Photo by Marcelo del Pozo/Reuters)

A man pulls a donkey mounted by a boy during the “Luminarias” annual religious celebration on the eve of Saint Anthony's Day in the village of Alosno, southwest Spain, January 16, 2015. (Photo by Marcelo del Pozo/Reuters)

A man jumps over a bonfire during the “Luminarias” annual religious celebration on the eve of Saint Anthony's Day in the village of Alosno, southwest Spain, January 16, 2015. (Photo by Marcelo del Pozo/Reuters)

A man jumps over a bonfire during the “Luminarias” annual religious celebration on the eve of Saint Anthony's Day in the village of Alosno, southwest Spain, January 16, 2015. (Photo by Marcelo del Pozo/Reuters)

A boy calls out to a friend while riding a donkey during the “Luminarias” annual religious celebration on the eve of Saint Anthony's Day in the village of Alosno, southwest Spain, January 16, 2015. (Photo by Marcelo del Pozo/Reuters)

A man rides a horse through flames during the “Luminarias” annual religious celebration on the night before Saint Anthony's, patron of animals, in the village of Alosno, southwest Spain, January 16, 2015. (Photo by Marcelo del Pozo/Reuters)