The range of Mount Geraneia extends across the country from east to west, forming a barrier between continental Greece and the Peloponnesus.
Between this ridge and the offshoots of Geraneia opposite a narrow depression allowed of easy transit across the Isthmus neck.
Even from the village, the view over the gulf, including Parnassus with its giant neighbours on the N., Cyllene and its neighbours on the W., and Geraneia on the N.E., is very fine.
Finally, at the extreme west of the whole district, Cithaeron is bent round at right angles in the direction oft the isthmus, at the northern approach to which it abuts against the mighty mass of Mount Geraneia, which is interposed between the Corinthian and the Saronic Gulf.
These were three in number: one along the shores of the Corinthian Gulf, which, owing to the nature of the ground, makes a long detour; the other two starting from Megara, and passing, the one by a lofty though gradual route over the ridge of Geraneia, the other along the Saronic Gulf, under the dangerous precipices of the Scironian rocks.