Thriasio Plain

The largest town in the plain was Eleusis (modern-day Elefsina), location of the famous Eleusinian Mysteries.

[1] In antiquity, as today, the area was connected to central 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 Thriasio Plain was ravaged by the Spartan army of King Archidamus II in his campaign against the Athenians.

As of 2010, there are plans to create a major center for the transshipment of commercial goods unloaded in the nearby port of Pireas (Athens port) to the rest of Greece and neighboring countries.

The Thriasio Plain is particularly vulnerable to high temperatures due to its topography[5] and has experienced the highest temperatures ever recorded in Greece and continental Europe[6] with 48.0 °C in Elefsina and 47.5 °C in Aspropyrgos in 1977 and 2007 respectively.