Cyrenaica In a wider sense, still in use, Cyrenaica includes all of the eastern part of Libya, including the Kufra District. Cyrenaica borders on Tripolitania in the northwest and on Fezzan in the southwest. The region that used to be Cyrenaica officially until 1963 has formed several shabiyat, the administrative divisions of Libya, since 1995. The 2011 Libyan Civil War started in Cyrenaica, which came largely under the control of the National Transitional Council (headquartered in Benghazi) for most of the war. In 2012, the National Transitional Council declared Cyrenaica to be an autonomous region of Libya. Geologically, Cyrenaica rests on
Arcadia (ancient region) of the Eurotas river. To the south-west, the border with Messania ran along the tops of Mount Nomia, and Mount Elaeum, and from there the border with Elis ran along the valleys of the Erymanthos and Diagon rivers. Most of the region of Arcardia was mountainous, apart from the plains around Tegea and Megalopolis, and the valleys of the Alpheios and Ladon rivers. The Arcadians were an ancient Greek tribe which was situated in the mountainous Peloponnese. It is considered one of the oldest Greek tribes which settled in Greece and it was probably a relative tribe of the proto-Greeks