The Pelasgic wall or Pelasgian fortress or Enneapylon was a monument supposed to have been built by the Pelasgians, after levelling the summit of the rock on the Acropolis of Athens. Thucydides and Aristophanes call it "Pelargikon", "Stork wall or place". "Pelargikon" refers to the line of walls at the western foot of the Acropolis. During the time of Thucydides, the wall was said to have stood several meters high with a large, visible fragment at 6 m (20 ft) broad, located on to the south of the present Propylaia and close to the earlier gateway. Today, the beveling can be seen but the foundation of the wall lies below the level of the present hill.