The Alazani is a river that flows through the Caucasus. It is the main tributary of the Kura in eastern Georgia, and flows for 351 kilometres (218 mi). Part of its path forms the border between Georgia and Azerbaijan, before it meets the Kura at the Mingəçevir Reservoir in Azerbaijan. The river is likely the same as that referred to by classical authors Strabo and Pliny as "Alazonius" or "Alazon", and may also be the Abas River mentioned by Plutarch and Dio Cassius (37.3) as the location of the Battle of the Abas.