The Mongolian Altai presents the highest mountain of Mongolia, Khuitny Orgil (4,374 meters) in the massif of Tavan Bogd Uul, on the border with China and Russia. The main rivers of the country are the Selenga and Kekulen. The Mongolia economy is based on agriculture (barley, wheat, oats, potatoes and vegetables) and livestock (sheep, goats, cattle and horses), are also important the mineral resources (coal, lignite, oil, gold, fluorite, uranium, salt) and industry (textiles, food, tanning and paper).