Edward Augustus Freeman and Thomas Ashby, 1911 Encyclopædia Britannica (1911)
“ The thickness of the wall averages 10 ft., but varies 3 or 4 ft. each way. The point where the terrace of Epipolae narrows down to a ridge about 60 yds. wide, which is its only link with the hills to the west, had thrice proved during the Athenian siege to be the key to Syracuse. It now bears the ruins of a mighty fortress, finer than that which defends the entrance to the acropolis of Selinus-the most imposing, indeed, that has come down to us from the Greek period—which there is no doubt is the work of Dionysius. ”
