During the Peloponnesian War, the misthios Kassandra explored the area when she went there with Brasidas to uncover the truth about his past. They found Lilaira, a woman strung from a tree, who asked Brasidas to reunite her with her loved one. Kassandra also found an Ainigmata Ostraka and claimed some valuables.
- The name of this forest references Oizys, Greek goddess of misery, anxiety, grief, and depression.
- The forest of Oizyus is thematically similar to the forest of suicides depicted in Dantes Divine comedy.