This is the patron of the patron of Spain, the saint of animals in the village of San Bartolome de Pinares in the north-west of Madrid.
These traditions are meant to cleanse and protect horses.
For this, dozens of 500-year-old small villages of San Bartolome have gathered on these stone streets.
which ride through the horses for bonfire.
It is waiting for the start of the "Luminaries" celebration on the eve of a horse Saint Anthony Day.
Source - https://nypost.com/2018/01/17/horses-are-purified-by-fire-in-spain/slide-16/