Major Ranges
Considering underwater topography, the Ocean Ridges of the world form the longest mountain systems on Earth. Above sea level major mountain systems are chiefly arranged in two regions; the Pacific Ring of Fire and the Alpide Belt. The first includes the mountains of the western coast of the Americas, Kamatchaka, Japan, Taiwan, the Philippines, as well as parts of Indonesia and Papua New Guinea. The Alpide Belt runs from Indonesia to the Alps including the Himalayas and other European and Asian ranges. Above sea level the Andes is usually considered the world's longest mountain system; it is 7,000 kilometres (4,300 mi) in length. The Himalaya Range contains the highest mountains on the Earth's surface, the highest of which is Mount Everest. The world's longest mountain system is known as Ocean Ridge, which is a chain of mountains that runs on the seafloor of five oceans around the world; it has a length of 65,000 kilometres (40,400 mi), and the total length of the system is 80,000 kilometres (49,700 mi). The Andes is the world's longest mountain system on the surface of a continent; it is 7,000 kilometres (4,300 mi) in length. To clarify, the Andes is the world's largest chain of mountains above sea level. The Arctic Cordillera is the world's northernmost mountain system and contains the highest point in eastern North America.
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