The Pilaros district of Kefalonia (Cephalonia) straddles the divide between the main bulk of the island and the peninsula of Erissos. It is the fine alluvial soils that run through tthis valley that have encouraged agriculture, although many of the villages, perched on the slopes were built were a view to defending themselves from pirate slavers.

The harbour of Agia Efimia is were most visitors to the region stay and this pretty port remains a good natured and friendly base for a stay on Kefalonia. To the west Pilaros rises until abruptly ending with a precipitous descent to the famous Myrtos beach.

Agia Efimia is a traditional fishing village and capital of the Pilaros region of Kefalonia (Cephalonia).

There has been at harbour at this site for centuries, but most of the area's inhabitants lived in the hills. Villages such as Drakopoulata, Dendrinata and Makrata provided some protection against the pirate raids that plagued Kefalonia and the whole Ionian.