The alps and Pyrenees of Western Europe and the Ural Mountains of Russia were created primarily by

Ural, mountain range forming a rugged spine in west-central Russia and the major part of the traditional physiographic boundary between Europe and Asia. Extending some 1,550 miles (2,500 km) from the bend of the Ural River in the south to the low, severely eroded Pay-Khoy Ridge, which forms a 250-mile (400-km) fingerlike extension to the northern tip of the Urals proper, the mountains constitute the major portion of the Uralian orogenic belt, which stretches 2,175 miles (3,500 km) from the Aral Sea to the northernmost tip of Novaya Zemlya.

Explanation: