Related Clues:
- Europe/Asia divider
- -- Mountains
- Eurasian divider
- Eurasian mountain range
- Eastern border of Europe
- River through Orsk
- Russia's __ Mountains
- Caspian Sea range
- River through Russia and Kazakhstan
- 1,500-mile-long range
- Russian peaks
- River through Kazakhstan
- River past Orenburg
- European/Asian range
- Orsk is on it