History of the Peloponnesian War

And they set to work with greater zeal than ever building their fort at Eetioneia.[*](See map at end.) And the purpose of this fort was, as Theramenes and his adherents said, not that they might prevent the Samian fleet from entering the Peiraeus in case they should attempt to force their way in, but rather that they might admit the enemy whenever they wished with both his army and fleet. For Eetioneia is a mole extending out from the Peiraeus, and immediately beside it is the entrance to the harbour.

It was therefore being connected by a wall with the wall which already existed somewhat inland, and in such a way that if only a few men were stationed inside it would control the entrance; for both the old wall running inland and the new inner wall that was being built facing the sea came to an end in the second of the two towers, the one that lay exactly at the mouth of the harbour, which was narrow.

They also cut off with a wall inside the harbour a portico which was very large and immediately adjoined this inland wall; and this they controlled themselves, and compelled everybody to deposit in it the corn that was already on hand as well as to discharge there that which came in by sea, and to take it from there if they wished to sell it.