Laconia Peninsula. The Mani Peninsula is in the west region of Lakonia. The islands of Kythira and Antikythera lie to the south, but they administratively belong to the Attica regional unit of islands. The island, Elafonisos, situated between the Laconian mainland and Kythira, is part of Laconia. The Eurotas is the longest river in the prefecture. The valley of the Eurotas is predominantly an agricultural region that contains many citrus groves, olive groves, and pasture lands. It is the location of the largest orange production in the Peloponnese and probably in all of Greece. Lakonia, a brand of orange juice, is
Sellasia (Laconia) separated by a wall from the southern half, which was on lower ground. Sellasia (Laconia) Sellasia (), or Selasia (Σελασία), was a town of ancient Laconia, situated in the valley of the Oenus, on the road leading from Tegea and Argos, and one of the bulwarks of Sparta against an invading army. Its distance from Sparta is nowhere mentioned among the ancient writers; but from the description which Polybius gives of the celebrated battle fought in its neighbourhood (the Battle of Sellasia) between Antigonus III Doson and Cleomenes III in 222 BCE, it is probable that the plain now called