Arta (Greek: Άρτα) is one of the prefectures of Greece. It is part of the Epirus periphery. Its capital is the city of Arta. It is located north of the Ambracian Gulf. Mountains surround the northeast with only one road linking into the Pineios valley and Thessaly, and low-land agricultural plains to its west. It is bounded by the prefectures of Preveza in the west, Ioannina to the north, Trikala in the east, Karditsa to the east and Aetolia-Acarnania to the south. The eastern boundary is formed by the Acheloos River and the western boundary up to near GR-5/GR-21 jct is the Louros River.
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