Thriasian Plain

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The Thriasian Plain (Greek: Θριάσιο Πεδίο, Thriasio Pedio) is a plain in western Attica, immediately to the west of Athens, in Greece. It is bounded by Mount Egaleo to the east, Mount Parnitha to the north, Mount Pateras to the west, and the Bay of Eleusina to the south.


The Thriasian Plain owes its name to the ancient deme of Thria (Greek: Θρία), one the demes of ancient Athens. The largest town in the plain was Eleusis (modern-day Eleusina), location of the famous Eleusinian mysteries. In Greek mythology, when the goddess Athena won the contest for control of Attica over Poseidon, Poseidon flooded the plain in wrath, until called to order by Zeus[1]

In antiquity, as today, the area was connected to Athens by two passes: the Sacred Way (Greek: Ιερά Οδός) to the west, today used by the main Athens–Corinth highway, and another pass to the northwest nowadays used by the Attiki Odos highway.[2] During the Peloponnesian War (431–404 BC) the Thriasian Plain was ravaged by the Spartan armies of King Archidamus II in his campaign against the Athenians.[3]

Modern times[edit]

Today it is largely an industrial area, hosting some of Greece's major industrial facilities, such as its largest oil refineries and steel mills. There are four towns in the Thriasian Plain: Eleusina (anc. Eleusis), Mandra, Magoula, and Aspropyrgos. The plain hosts a major air force base outside of Eleusina, as well as a major station of the Athens Suburban Rail. As of 2010, there are plans to create a major center for the transshipment of commercial goods unloaded in the nearby port of Pireas to the rest of Greece and neighboring countries.[4]


  1. ^ Olga Palagia. The pediments of the Parthenon. BRILL, 1998, ISBN 978-90-04-11198-1, p. 40
  2. ^ Hans Rupprecht Goette. Athens, Attica, and the Megarid: an archaeological guide. Routledge, 2001, ISBN 978-0-415-24370-4, p. 280
  3. ^ Thucydides, Martin Hammond, Peter John Rhodes. The Peloponnesian War. Oxford University Press, 2009, ISBN 978-0-19-282191-1, p. 84
  4. ^ Ta Nea, Sept. 19 2010

Coordinates: 38°04′41″N 23°34′59″E / 38.078°N 23.583°E / 38.078; 23.583