Slate Wall Dungeon

The Slate Wall Dungeon is a different wall type (the other three being brick, slab and tiled walls) that can be created naturally in the dungeon in world generation. Like all other dungeon wall types, Dungeon Slate Walls cannot be crafted but can be obtained through mining or using explosives. Pre-Hard Mode, and until Plantera has been defeated in Hard Mode, the enemies that spawn in parts of the dungeon with slate walls are the same as those that spawn in all other wall types. Before defeating Plantera, a way to tell if your dungeon contains Slate Walls is by looking for the faction flags, the Poison Army Pennant and Forsaken Mage Society Sign.

Blocks
Note: only blocks of the same colour will generate in a particular world.
 * Blue Brick
 * Pink Brick
 * Green Brick
 * Blue Slate Wall
 * Pink Slate Wall
 * Green Slate Wall

Pre-Plantera Enemies
Pre- Plantera, enemies found in the slate wall dungeon are identical to those found in parts of the dungeon with different wall types.

Post-Plantera Enemies
The following post-plantera enemies are unique to parts of the dungeon with slate walls:
 * Toxic Armoured Bones

The following post-plantera enemies are found in all parts of the dungeon:
 * Forsaken Mage
 * Skeleton Private
 * Dungeon Serpent (Miniboss)
 * Bone Lee
 * Dungeon Spirit