The Tara is a river in Montenegro and Bosnia and Herzegovina. It emerges from the confluence of the Opasnica and Veruša rivers in the Komovi Mountains, part of the Dinaric Alps of Montenegro. The total length is 143 km (89 mi), of which 141 km (88 mi) are in or on the border of Montenegro, it also forms the border between the two countries in several places. The Tara flows from south to north - north-west and converges with the Piva at the Bosnia and Herzegovina and Montenegro border between the villages of Šćepan Polje (Montenegro) and Hum to form the Drina river.