17, II), the Hernici in the Trerus valley, Satricum and Glanica in the Pomptine marshes.
At Forum Appii it entered the Pomptine Marshes; that this portion (19 m.
Of the Pomptine Marshes.
Its position, at the point where the Volscian Hills reach the coast, leaving no space for passage between them and the sea, commanding the Pomptine Marshes (urbs pron g in paludes, as Livy calls it) and possessing a small harbour, was one of great strategic importance; and it thus appears very early in Roman history.
The summit is occupied by a massive terrace, supported by arcades of fine opus incertum (traditionally, but wrongly, called the palace of Theodoric) on all sides except the E., and commanding a magnificent view seaward over the coast and over the Pomptine Marshes.