Asia is too massive and diverse to conceptualize as a digestible travel "destination". Even defining the borders of this continent is difficult - from the mountains around the Black Sea in the west, to the snow fields of Siberia in the east, there are more people and cities in Asia than outside of it. Asia's and the world's highest point is Mount Everest, along the border of China and Nepal, which rises to 8,848 m (29,028 feet) above sea level. Its lowest point is the Dead Sea, between Israel, the Palestinian Territories, and Jordan, whose surface is 400 m (1,312 feet) below sea level. Asia's longest river is the Yangtze, which runs 6,300 km (3,915 miles) through China. Its largest lake is the 386,400 sq km (149,200 square mile) Caspian Sea, which is surrounded by several Central Asian nations. Asia is bounded by the Pacific Ocean to the east, by Australia to the southeast, and by the Indian Ocean to the south. It is bordered by the Red Sea to the southwest, by Europe and Urals to the west, and by the Arctic Ocean to the north.