The Rat Warrens begin with nothing more than a grated wall—but behind it lies a hidden world of tunnels, filth, and forgotten pathways. Swing the grate open or pull it free, and you reveal a network of sewage pipes waiting to be explored… or feared.

Build your own labyrinth using modular pipe sections—twisting elbows, branching tees, intersecting crossings, rising shafts, and broken, collapsed runs that hint at long neglect. These tunnels can snake beneath your builds, connect distant rooms, or serve as the perfect ambush route for whatever lurks below.

Finished with cobbled floors, manholes, and scattered pipework, the Rat Warrens transform your Midden into more than just a setting—it becomes a place with secrets.