This chamber, a full 30 feet below the Upper Dungeon, isn't made of stone blocks, it's hewn from the living rock of the earth.  10 by 15 feet, its domed ceiling and walls show the tool marks its excavation.  There are numerous lines of filth on the walls marking the various levels that water has risen up the walls during previous rainy seasons.
The Lower Dungeon Guard Room, Dungeon
murderer
visitor
I come to see the king when in town. I do not like the peasants of the castle. I am good friends with the king,
Well I had come to see the king... Ah, what are you doing visiting the king? Well he is a friend of mine, and he was like hey you should totally check out my dungeon its so great. He gets like that when he drinks. Ah... A man like me has never been able to call a man like the King a friend. You are a lucky one. Sure, when he doesn't have me do strange things such as this. Did the king mention when he'd be arriving? No not particularly, I suppose I will just wander back up once I think I have been here long enough to satisfy his need of me seeing the place. Ah... I think you should stay.. Its a little dank for me to want to do that. Yeah, but..... I'll be honest, people are a little afraid of me. I'd like some company. I really don't think you should leave.. What about the maniacal over there, certainly he can keep you company... I didn't ask the maniacal, I asked you.....