Catacombs Maps. This is a map of the catacombs of wrath from pathfinders rise of the runelords chapter 1. Ancient Catacombs Map Zeffo for Star Wars Jedi Fallen Order.
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An extremely detailed map of the Municipal Ossuary of Paris also called Catacombs of Paris. You could easily switch maps into scaled tactical maps suitable for role-playing and miniature games just buy Dungeons. Like the fractal branching in the lungs.
Kings Quest 5 Curiosities.
As you can see there are LOADS of tunnels 0 This would make for an insane orienteering race. Like the fractal branching in the lungs. S - Smoke in your eyes 1 - Around you stretches miles of winding twisting tunnels. 1 - Note 10 - Portal.