Shortlist, Black Beast by Diogo Baptista

"Rapa das Bestas (Shaving of the Beasts) is a 400-year-old festival that takes place in the heart of Galicia, Spain, over four days in July. At half-past six on the first morning the church bells ring and firecrackers are released in order to call villagers to a mass where they ask for protection and guidance from Saint Lawrence.

The villagers then head into the surroundings hills where they round up hundreds of wild horses, bringing them down to a stone compound where they are wrestled to the ground for a haircut. Rapa das Bestas is an impressive festival that celebrates the relationship between man and beast, humans and nature, tradition and modernity."