Plaza de la Concepcion

Around 5pm, before the devil-burning activities started. There was a stout man in a white hat religiously puffing a cigarrette, periodically walking around the plaza with a short metal tube (he's in the right 1/3'd of the photo). He would place projectile fireworks inside and light them with his stub, followed shortly by a >shwoop--- Boom!<. You can see the gasolina station in the background.
Boing!