This church is in Villafranca del Bierzo. A pilgrim who gets this far is getting pretty close to Santiago, about 200 km. If a pilgrim gets this far and is too sick or infirm to go any farther they can go through the door of pardon and get the same indulgence they would have gotten if they had made it to Santiago. (That may just be historical. We are not sure if it is still the case.)