The Ural Mountains (Russian: Уральские горы, tr. Uralskiye gory) are a mountain range forming the boundary between Europe and Asia in central Russia and northern Kazakhstan. The highest peak is Mount Narodnaya at about 6,400 feet. The mountains are some of the world's oldest, formed over 350 million years ago. The mountain chain is over 2000 kilometers (1200 miles) long and an average of 100 kilometers (60 miles) wide.