There's a bull somewhere in this cloud of dust. I've been yesterday to Ponte de Lima to attend a feast of "Vaca das Cordas".
So they give wine to a bull, then they conduct him through the streets of the town to finally bring by the river, where they try to catch the animal and grab by the horns. the bull is tide with ropes and being controlled by few guys that keep the ropes.
Yes, I chickened out so there are no close ups available.