History of the Peloponnesian War

After this the Athenians set up a trophy and restored to the Syracusans their dead under truce, and next day descended to Syracuse itself; and no one coming out to meet them, reascended and built a fort at Labdalum, upon the edge of the cliffs of Epipolae, looking towards Megara, to serve as a magazine for their baggage and money, whenever they advanced to give battle or to work at the lines.

Not long afterwards three hundred cavalry came to them from Egesta, and about a hundred from the Sicels, Naxians, and others; and thus, with the two hundred and fifty from Athens, for whom they had got horses from the Egestaeans and Catanians, besides others that they bought, they now mustered six hundred and fifty cavalry in all.

After posting a garrison in Labdalum, they advanced to Syca, where they sate down and quickly built the Circle or centre of their wall of circumvallation. The Syracusans, appalled at the rapidity with which the work advanced, determined to go out against them and give battle and interrupt it;