Endless tunnels of gray stone wind through the Catacombs, the destination of humanoid spirits. Some passages are painfully tight, while others widen into grand halls with ceilings lost in darkness. The Dead are everywhere, shades pleading for release, husks keening in the shadows. The chambers of the Catacombs might contain vast wells filled with moaning mist, or nalfeshnees herding shades into pens and scraping lemures off the walls.
The Catacombs may be larger than Khorvaire, or even Eberron itself. A mortal could wander forever through these winding tunnels—at least until they’re consumed by ennui. However, there are junction points that transcend the logic of distance. If one knows the right symbols to follow, they can cross the vastness of the Catacombs quickly or pass to other layers—perhaps in search of a shade to rescue, as discussed in the “Concerning Resurrection” section.