The Greek Dark Ages, or the Homeric era, is the period of Archaic Greece from (circa) 1200 BC to 750 BC.
Questions about the Greek Dark Ages should be about historical events in the wider Greek speaking world during the era. The Mycenaean civilization and the kingdom of Knossos are the most notable Greek civilizations of the time, and notable examples of Greek literature of the time are Homer's epics, the Iliad and the Odyssey.
ancient-greece for general questions about ancient Greece,
classical-greece for questions specific to the Classical period,
greco-persian-wars for questions specific to the Greco-Persian Wars,
hellenistic-greece for questions about the Hellenistic period,
alexander-iii-greece for questions specific to Alexander the Great,
macedon for questions about the ancient kingdom of Macedon,
greek-mythology for questions about the myths of Ancient Greece (but please read this relevant Meta discussion before asking mythological questions).