[1] The destruction even crossed into Europe in what is now Bulgaria, with archaeological evidence showing that the Yunacite, Salcutza, and Esero centers had a sudden mass desertion during this time.
[1] From the Dardanelles, the refugee invaders moved into mainland Greece, and the Peloponnese saw burnt and abandoned cities on par with the much later Dorian invasion which destroyed the Mycenaean civilization.
[1] At this time, 1900 BC, destruction layers can be found at sites of Southern Greece like Orchomenos, Eutresis [de], Hagios Kosmas, Raphina, Apesokari, Korakou, Zygouries, Tiryns, Asine, Malthi and Asea.
[1] Drews and Dietrich connect these alleged "mass migrations" with the coming of the Greeks, moving from former settlements into the southern and central Balkans, displacing the former pre-Greek inhabitants of Greece.
[2][3] Yet, more recent theories and evidence suggest that a Proto-Indo-Hittite language dates back to the fourth millennium BCE, prior to the Bronze Age.