Lit only by scattered torches, The dungeon lies far underneath the castle.  Bandits and Thieves who find themselves there are met with cold stone walls and floors, with chains and bars restricting movement.  Guards patrol the corridors, keeping an eye out for any escape attempt or misdeed.  The only comforts afforded in the Dungeon are the piles of hay for sleeping.
Dungeon, Inside Castle
bandit
criminal
I am a criminal who has been falsely accused of treason. I have been sentenced to die . I will try to escape today.
Tell me bandit, do you know of anyone who has successfully excaped this? I cannot say that I do. Well help me and we can be the first. Certainly, do you have a plan? Yes you will use this to throw over the wall.  As you wish -throws the rope over the wall- Alright now lets start climbing. You go first and I will steady the rope, I am used to climbing myself. Thank you. Now when i get to the top i need you to create a distraction then. Aye, I will chuck one of these rocks over to the corner Good after that i will tackle the guard and strangle him. -throws the rock into the corner- Hurry while they are distracted!