Ooze Pit
This fetid pit is full of rot, decay, and covered in slime.
You learn the nature and special properties of unusual plants or animals.
This fetid pit is full of rot, decay, and covered in slime.
A section of the woods has bloomed and grown out of control, leading to a sudden outpouring of the flora and fauna.
Something foul in the water is giving rise to noxious and mutated monsters. Identifying it will take knowledge of the local ecology or a thorough search of the pool itself. In either case, removing it will be hazardous to your health.