At the Ruins of Sheffield Castle

Hidden under Sheffield's aptly named Castle Market are the remains of Sheffield Castle, destroyed centuries ago.
This part of the keep wall is really the only accessible part, the ladders into the other area being a bit rickety.
There are these 2 areas for now. A replacement for the market is being built right now. We could get to see more :-)
And in case you're wondering, that really is me. I don't often appear in photos.