Vjosë

The Vjosë (Albanian indefinite form, the definite form is "Vjosa") or Aóos (Greek: "Αώος", Latin: "Aous") is a river in northwestern Greece and southwestern Albania. Its total length is about 272 km, of which 80 km are in Greece. Its source is in the Pindus mountains, in northern Epirus. It flows through the Vikos-Aoos National Park, where it forms impressive canyons. It flows into the Adriatic Sea, north of Vlorë. Towns along the river include Konitsa in Greece, and Përmet and Tepelenë in Albania.

In the antiquity the river passed more to the north, towards where Pojan and Fier nowadays lie. Owing to an earthquake in the fourth century AD, it changed to the present course. This earthquake and river change were the main reasons that led to the decline of the old city of Apollonia.