Old Slave Block is a location in Torment: Tides of Numenera.
Used to be a prison for slaves, back in the days of Chila the Great. They carved it out of the Bloom-flesh with saws that spat solid light and blades that weren't all there. Folk say that's where Chila was chained up, and that's where her *legend* was born. However, you wouldn't know it anymore. It's all feathers and filth in there now, ever since the murdens moved in. They're a pack of thieves, and if you get too close to one of 'em, your thoughts become fill with static. Makes it hard to do just about anything.
Points of interest
The Old Slave Block is more or less a dungeon. Go down the stairs to run into the first pair of lovely, lovely murdens. These little bundles of love want to keep you out of the block (how cute!). You can use Intellect (Persuasion, Deception) to convince them your intent is peaceful - or Might (Intimidation) to force them to kneel to you.
The last cell contains Shinwise. You can use Speed (Quick Fingers) to pick it or Might (Smashing) to break it down. If you want to access the Murden Treasure Vault, you can use Speed to push him in. Don't feel bad, though, he was sentenced for a horrible crime to get eaten. If that's too cruel for you, let him escape and kill the small maws that appear when you explore the room. After you defeat them, a larger maw will open, allowing you to enter the vault that way.