Related Clues:
- River dividing Asia and Europe
- Iroquois Reservation
- __ Mountains: Europe/Asia border range
- Mountain range separating two continents
- River through southern Russia
- Europe/Asia border range
- Europe/Asia boundary river
- 1500-mile river to the Caspian Sea
- Continent-separating mountain range
- River serving Orsk
- River that runs by 11 of the 20 largest cities in Russia
- River through the Steppe of Asia
- River in Russia and Kazakhstan
- The Sakmara flows from it
- Western Russia's ___ range