Diateichisma

The Diateichisma was built after the Battle of Chaeronea (338 BC).

It was 900m long and built across the crests of the three hills: that of the Muses, of the Nymphs, and the Pnyx.

It joined the Themistoclean Wall at north and south and had square and circular towers and two gates.

However it cut through inhabited suburbs of ancient Athens, leaving the demes of Melete and Koile outside the wall and vulnerable.

The south gate in the valley between the hill of the Muses and the Pnyx was for the most important commercial Koile road of Athens which led to the port of Piraeus.