It is claimed by the Hellenistic historian
Strabo that in the
Archaic period, an early
amphictyony, one of several Hellenic leagues of pre-classical times of which little is known, was centered on Kalaureia–the
Calaurian Amphictyony. Archaeology of the site suggested to Thomas Kelly that the sacred league was founded in the second quarter of the seventh century BCE, ca 680-650; before that date there were virtually no remains at the site, which could not have been used more than sporadically. A
peribolos (περίβολος) wall enclosing the sanctuary site was built with the temple, but there are no earlier traces of structures. The
temenos or sanctuary dedicated to Poseidon, may have been linked to the sanctuaries at
Geraistos and
Tainaros (Ταίναρος). The island was known at one time as
Eirene (Εἰρήνη) ("Peace"), clearly in reference to the amphictyony. A reference in Strabo gives a list of the
poleis that belonged: :And there was also a kind of Amphictyonic League connected with this temple, a league of seven cities which shared in the sacrifice; they were
Hermione,
Epidaurus,
Aegina,
Athens,
Prasïeis,
Nauplïeis, and
Orchomenus Minyeius; however, the
Argives paid dues for the Nauplians, and the
Lacedaemonians for the Prasians. (Strabo,
Geography viii.6.14.)
Troezen and
Poros, which he considered the harbour of Troezen, Strabo omitted. However, there is no archaeological evidence to corroborate this list, and modern scholars believe that a feast in the ancient
temenos celebrating the "revival" of the amphictyony, may have been based on a Hellenistic invention; the feast certainly existed: a third-century BCE plaque celebrating the "revival" of the Kalaureian League has been recovered. After the
Greco-Persian Wars, the friendly connection between Athens and Troezen appears to have continued; and during the hegemony of the
Athenian empire before the
Thirty Years' Peace (455 BCE) Troezen was an ally of Athens, and was apparently garrisoned by Athenian troops; but by this peace the Athenians were compelled to relinquish Troezen. (19.29) == Archaeological excavations ==