Thria (Ancient Greek: Θρία) was an important deme of ancient Athens, from which the Eleusinian plain, or, at all events, the central or eastern part of it, was called the Thriasian Plain (Θριάσιον πεδίον).
When Attica was invaded from the west, the Thriasian Plain was the first to suffer from the ravages of the enemy.
[1][2][3] A portion of the Eleusinian plain was also called the Rharian Plain (Ράριον), in ancient times, but its site is unknown.
[5] The site of Thria is located southeast of modern Aspropyrgos.
This article about a location in Ancient Attica is a stub.