History of the Peloponnesian War

The Syracusans, on their part, both built in the course of the winter a wall to their city, along the whole quarter looking towards Epipolae, including the Temenites. to prevent their being circumvallated so easily as they would with a less circuit, in case of their being defeated; and also fortified Megara as an out-post, and another in the Olympieum. They fixed palisades, too, along the edge of the sea, at all points where there were facilities for landing.

And as they knew that the Athenians were wintering at Naxos, they marched in full force to Catana, and both ravaged part of their land, and after burning the tents and encampment of the Athenians, returned home.