History of the Peloponnesian War
Thucydides
Thucydides. History of the Peloponnesian War. Crawley, Richard, translator. London and Toronto: J. M. Dent and Sons Ltd.; New York: E. P. Dutton and Co., 1914.
Attacking in this way in considerable disorder, the Syracusans were defeated in battle at Epipolae and retired to the town, with a loss of about three hundred killed, and Diomilus among the number.
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.