The whole town stretched for some two miles parallel to the shore and for about a mile inland, and covered perhaps 1,200 acres.

Its street-plan can hardly be older than Caesar or Augustus, but the shape of its 'insulae' appears to be without parallel in that age.

It comes closest to the oblong blocks of Pompeii and of Naples (pp.

63, 100), and its two theatres also recall those towns.

One reason for its plan may no doubt be found in the physical character of the site.