They are the Ural Mountains and the Caucasus Mountains.
The Ural and the Caucasus Mountain ranges divide Europe from Asia.
The Urals and the Caucus mountains.
The Ural Mountains and the Caucasus Mountains separate Asia and Europe.
The Western Caucasus mountain range, which divide Europe from Asia.
The Western Caucasus mountain range, which divide Europe from Asia.
Mount Evrest
Urals
Moscow is west of the Urals, the mountain range usually considered as dividing Europe from Asia. Thus Moscow is in Europe.
There are two mountain ranges dividing Europe and Asia: The Ural Mountains divided Russia and Kazakhstan, ultimately the continents of Europe and Asia. The Caucasus Mountains divide Georgia and Azerbaijan, ultimately the continents of Europe and Asia. Armenia, another Caucasus State that doesn't touch the Caucasus, is a geo-political European country. The Caucasus also run through Russia, but do not divide the country between Europe and Asia in this part.
Ural Mountains divide Asia from Europe.
The mountain range that is located between Europe and Asia is the Urals.
No mountain range separates Europe from Russia. Part of Russia is in Europe. What you are thinking about is what separates Europe from Asia. That is mainly the mountain range known as the Urals, and also the mountain range known as the Caucasus mountains. Most of Russia is in Asia.