The sewers are dank and uncomfortable. The low light that filters in from above makes it difficult to see, even though it's not pitch black. The stench of feces is overwhelming, and it takes all your willpower not to gag. Your boots slosh through small puddles of sewage as your footsteps echo through the forgotten tunnel.
The large pipe you're walking through opens up into a T-shaped junction with two other oversized pipes leading off in different directions. The junction is about 30 feet by 30 feet and littered with junk, though the debris seems to be arranged intentionally rather than haphazardly.
From under the piles garbage, a figure slowly emerges, like a rising corpse.
This is a single encounter that can be inserted into any adventure.
- from the publisher's blurb