Human: Produce a detailed written description of a spooky scene outside town ruins with bioluminescent fungus, sludge, and blocks. Assistant: 
The stone tunnel is aglow with bioluminescent fungus, generating an eerie reflection off the wet, sewage-covered ground. The air is full of mephitic gasses that create a wavering haze. Pieces of crumbling stone blocks, slick with sludge, make footing precarious.