The uncanny valley
Carnival celebrations in the northern Spanish village of Zubieta can be a bit off-putting - but that's part of the point.
During the festivities, bell-carrying performers known as Joaldunak from Zubieta and neighbouring Ituren visit each other's villages and perform a ritual dance to awaken the coming spring and ward off evil spirits. Alongside the dancers, villagers also dress in bizarre and frightening costumes to harass and scare visitors.