I almost missed this little door. It’s square and off the ground a bit. The only thing really standing out about it was the blue hinges, otherwise it was perfectly camouflaged in the castle’s stone works.  I stopped and wondered its original use, to pass supplies in or out? It’s a work door of sorts, not for people to pass through, unless it is a door to pass the dead out of the castle. I didn’t get a chance to find out, and if there are any castle’s buff’s out there, I’d love to hear your suggestion.