Early Helladic III Period of Greece
At Lerna and Tiryns in the Argolid, this cultural assemblage is found stratified directly above settlements of the Korakou (EH IIA) culture which had been destroyed by fire.
Here and elsewhere in the Argolid and Corinthia, there is no intervening "Lefkandi I" (EH IIB) cultural stage. In Laconia and Messenia in the southern Peloponnese, there is no evidence for either the "Lefkandi I" or the Tiryns cultures (except for a very late EH III assemblage recently published from the basal levels at Nichoria and from the Deriziotis Aloni site near Ano Englianos), despite the fact that these areas have been quite thoroughly explored. Rather, an early Middle Helladic cultural assemblage appears to succeed the Korakou culture either directly or after a period of abandonment of undetermined duration at sites such as Ayios Stephanos (Laconia) and Voïdhokoilia (Messenia). At Kolonna on Aegina, remains of the Tiryns culture are stratified immediately above a late phase of the EH II period whose architecture is comparable to that of Lerna III of the Korakou culture (a probably fortified settlement within which is the "White House", a 20 x 9 m. version of the "Corridor House" type best represented by the House of the Tiles at Lerna) but whose pottery includes a few pieces typical of the "Lefkandi I" assemblage of central Greece alongside a mass of vases characteristic of the EH IIA Korakou culture. In central Greece at the sites of Thebes, Eutresis, Orchomenos, and Lefkandi, strata of the Tiryns culture overlie those of the "Lefkandi I" culture. Not enough evidence is available from Attica to determine the course of events in this area. The full distribution of the Tiryns culture thus includes: Argolid, Achaea, Arcadia, Elis (i.e. the northern Peloponnese); Boeotia, Phocis, Locris, Euboea (i.e. central Greece south of Thessaly); the Ionian islands (Ithaca and possibly Lefkas).