human
Produce a detailed written description of a spooky scene inside a tunnel sewer with piles, webs, and a floor.
assistant
The floor is covered with rotting piles of garbage, apparently dumped from the dark fissure above. Some of the piles seem to be writhing, though it's tough to be sure through the noxious fog that blankets the floor. To the southeast, a mass of webs fills the tunnel.