Passage width
Normal: 10ft. wide 10ft. high
The tunnel is clogged with sludge, muck and slime, making the surface slippery and dangerous. (difficult terrain)
Low: The water in this tunnel is ankle to knee high, the floor is slick with filth. (Slippery, DC12 Dexterity save while running)
Undead: Escaped experiments from the Red Tower, many undead find their way into the city sewer. Zombies, skeletons or ghouls are common.
What feature would you like to be added to this website?