What looks like to be a scene from a film about the apocalypse is actually an annual tradition in the small Spanish village of San Bartolome de los Pinares.
In the small village of San Bartolome de los Pinares, about 62 miles northwest of Madrid, the annual “Luminarias” religious celebration.
During the Luminarias festival, a 500-year-old ritual in honor of Saint Anthony, the patron saint of animals, hundreds of people ride through flames on horseback.
The tradition is meant to purify the animals with the smoke of the bonfires and protect them for the year to come.
The animals jump to the sound of beating drums until midnight, when the flames are used for a barbecue feast that lasts until dawn.
(Source)