Ural mountains form a natural boundary between european russia and siberian russia.
A natural border between Europe and Asia is created by the Urals, which rise like a long, narrow spine across western Russia. The 2,500 km (1,550 mi) long mountain range cuts through semi-arid and forested regions in the south and Arctic tundra in the north.
The Urals are among the oldest mountains on Earth, having been formed between 250 and 300 million years ago as a result of continental collisions.
(For reference, the younger Himalayas began to form about 40 to 50 million years ago, and the older Appalachians began to build around 480 million years ago.) It has some relatively high altitudes for a range so old.
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